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<title>Algorithms_in_C++: others/pascal_triangle.cpp File Reference</title>
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<div id="projectname">Algorithms_in_C++<span id="projectnumber"> 1.0.0</span>
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</div>
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<div id="projectbrief">Set of algorithms implemented in C++.</div>
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@@ -136,30 +136,30 @@ Functions</h2></td></tr>
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</table>
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</div><div class="memdoc">
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<p >main function </p>
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<div class="fragment"><div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> {</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <span class="keywordtype">int</span> n = 0;</div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> </div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Set Pascal's Triangle Height"</span> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a> >> n;</div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> </div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="comment">// memory allocation (Assign two-dimensional array to store Pascal triangle)</span></div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keywordtype">int</span> **arr = <span class="keyword">new</span> <span class="keywordtype">int</span> *[n];</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> arr[i] = <span class="keyword">new</span> <span class="keywordtype">int</span>[2 * n - 1];</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/byte/memset.html">memset</a>(arr[i], 0, <span class="keyword">sizeof</span>(<span class="keywordtype">int</span>) * (2 * n - 1));</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> }</div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> </div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <a class="code hl_function" href="../../dc/d1a/pascal__triangle_8cpp.html#a4fc0e5a112f715c3a73989450b2cc5fd">pascal_triangle</a>(arr, n);</div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <a class="code hl_function" href="../../dc/d1a/pascal__triangle_8cpp.html#ad7a31d9cb2818d21b1ba12aead7f4c5c">show_pascal</a>(arr, n);</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> </div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="comment">// deallocation</span></div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keyword">delete</span>[] arr[i];</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> }</div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <span class="keyword">delete</span>[] arr;</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> </div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span>}</div>
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<div class="fragment"><div class="line"><span class="lineno"> 52</span> {</div>
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<div class="line"><span class="lineno"> 53</span> <span class="keywordtype">int</span> n = 0;</div>
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<div class="line"><span class="lineno"> 54</span> </div>
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<div class="line"><span class="lineno"> 55</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Set Pascal's Triangle Height"</span> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
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<div class="line"><span class="lineno"> 56</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a> >> n;</div>
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<div class="line"><span class="lineno"> 57</span> </div>
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<div class="line"><span class="lineno"> 58</span> <span class="comment">// memory allocation (Assign two-dimensional array to store Pascal triangle)</span></div>
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<div class="line"><span class="lineno"> 59</span> <span class="keywordtype">int</span> **arr = <span class="keyword">new</span> <span class="keywordtype">int</span> *[n];</div>
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<div class="line"><span class="lineno"> 60</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><span class="lineno"> 61</span> arr[i] = <span class="keyword">new</span> <span class="keywordtype">int</span>[2 * n - 1];</div>
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<div class="line"><span class="lineno"> 62</span> <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/byte/memset.html">memset</a>(arr[i], 0, <span class="keyword">sizeof</span>(<span class="keywordtype">int</span>) * (2 * n - 1));</div>
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<div class="line"><span class="lineno"> 63</span> }</div>
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<div class="line"><span class="lineno"> 64</span> </div>
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<div class="line"><span class="lineno"> 65</span> <a class="code hl_function" href="../../dc/d1a/pascal__triangle_8cpp.html#a4fc0e5a112f715c3a73989450b2cc5fd">pascal_triangle</a>(arr, n);</div>
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<div class="line"><span class="lineno"> 66</span> <a class="code hl_function" href="../../dc/d1a/pascal__triangle_8cpp.html#ad7a31d9cb2818d21b1ba12aead7f4c5c">show_pascal</a>(arr, n);</div>
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<div class="line"><span class="lineno"> 67</span> </div>
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<div class="line"><span class="lineno"> 68</span> <span class="comment">// deallocation</span></div>
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<div class="line"><span class="lineno"> 69</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><span class="lineno"> 70</span> <span class="keyword">delete</span>[] arr[i];</div>
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<div class="line"><span class="lineno"> 71</span> }</div>
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<div class="line"><span class="lineno"> 72</span> <span class="keyword">delete</span>[] arr;</div>
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<div class="line"><span class="lineno"> 73</span> </div>
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<div class="line"><span class="lineno"> 74</span> <span class="keywordflow">return</span> 0;</div>
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<div class="line"><span class="lineno"> 75</span>}</div>
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<div class="ttc" id="abasic_istream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a></div></div>
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<div class="ttc" id="abasic_ostream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a></div></div>
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<div class="ttc" id="aendl_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a></div><div class="ttdeci">T endl(T... args)</div></div>
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@@ -208,18 +208,18 @@ Here is the call graph for this function:</div>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>arr pointer returned </dd></dl>
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<div class="fragment"><div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> {</div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = n - i - 1; j < n + i; ++j) {</div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> <span class="keywordflow">if</span> (j == n - i - 1 || j == n + i - 1)</div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> arr[i][j] = 1; <span class="comment">// The edge of the Pascal triangle goes in 1</span></div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> <span class="keywordflow">else</span></div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> arr[i][j] = arr[i - 1][j - 1] + arr[i - 1][j + 1];</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> }</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> }</div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> </div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="keywordflow">return</span> arr;</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span>}</div>
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<div class="fragment"><div class="line"><span class="lineno"> 36</span> {</div>
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<div class="line"><span class="lineno"> 37</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><span class="lineno"> 38</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = n - i - 1; j < n + i; ++j) {</div>
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<div class="line"><span class="lineno"> 39</span> <span class="keywordflow">if</span> (j == n - i - 1 || j == n + i - 1)</div>
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<div class="line"><span class="lineno"> 40</span> arr[i][j] = 1; <span class="comment">// The edge of the Pascal triangle goes in 1</span></div>
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<div class="line"><span class="lineno"> 41</span> <span class="keywordflow">else</span></div>
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<div class="line"><span class="lineno"> 42</span> arr[i][j] = arr[i - 1][j - 1] + arr[i - 1][j + 1];</div>
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<div class="line"><span class="lineno"> 43</span> }</div>
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<div class="line"><span class="lineno"> 44</span> }</div>
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<div class="line"><span class="lineno"> 45</span> </div>
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<div class="line"><span class="lineno"> 46</span> <span class="keywordflow">return</span> arr;</div>
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<div class="line"><span class="lineno"> 47</span>}</div>
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</div><!-- fragment -->
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</div>
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</div>
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@@ -255,17 +255,17 @@ Here is the call graph for this function:</div>
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</table>
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</dd>
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</dl>
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<div class="fragment"><div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> {</div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j < n + i; ++j) {</div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> <span class="keywordflow">if</span> (arr[i][j] == 0)</div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/setw.html">std::setw</a>(4) << <span class="stringliteral">" "</span>;</div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> <span class="keywordflow">else</span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/setw.html">std::setw</a>(4) << arr[i][j];</div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> }</div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> }</div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span>}</div>
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<div class="fragment"><div class="line"><span class="lineno"> 18</span> {</div>
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<div class="line"><span class="lineno"> 19</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><span class="lineno"> 20</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j < n + i; ++j) {</div>
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<div class="line"><span class="lineno"> 21</span> <span class="keywordflow">if</span> (arr[i][j] == 0)</div>
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<div class="line"><span class="lineno"> 22</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/setw.html">std::setw</a>(4) << <span class="stringliteral">" "</span>;</div>
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<div class="line"><span class="lineno"> 23</span> <span class="keywordflow">else</span></div>
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<div class="line"><span class="lineno"> 24</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/setw.html">std::setw</a>(4) << arr[i][j];</div>
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<div class="line"><span class="lineno"> 25</span> }</div>
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<div class="line"><span class="lineno"> 26</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
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<div class="line"><span class="lineno"> 27</span> }</div>
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<div class="line"><span class="lineno"> 28</span>}</div>
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<div class="ttc" id="asetw_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/manip/setw.html">std::setw</a></div><div class="ttdeci">T setw(T... args)</div></div>
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</div><!-- fragment --><div class="dynheader">
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Here is the call graph for this function:</div>
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@@ -282,7 +282,7 @@ Here is the call graph for this function:</div>
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<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
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<ul>
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<li class="navelem"><a class="el" href="../../dir_9510827d0b234b3cc54b29892f217477.html">others</a></li><li class="navelem"><a class="el" href="../../dc/d1a/pascal__triangle_8cpp.html">pascal_triangle.cpp</a></li>
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<li class="footer">Generated by <a href="https://www.doxygen.org/index.html"><img class="footer" src="../../doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.9.2 </li>
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<li class="footer">Generated by <a href="https://www.doxygen.org/index.html"><img class="footer" src="../../doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.9.3 </li>
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</body>
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