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<a href="../../d9/d02/linear__search_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span> </div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="preprocessor">#include &lt;cassert&gt;</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include &lt;iostream&gt;</span> </div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span></div>
<div class="foldopen" id="foldopen00021" data-start="{" data-end="}">
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"><a class="line" href="../../d9/d02/linear__search_8cpp.html#a84ac3988a534eb60ca351ed6caf56d84"> 21</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="../../d9/d02/linear__search_8cpp.html#a84ac3988a534eb60ca351ed6caf56d84">LinearSearch</a>(<span class="keywordtype">int</span> *array, <span class="keywordtype">int</span> size, <span class="keywordtype">int</span> key) {</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; size; ++i) {</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> <span class="keywordflow">if</span> (array[i] == key) {</div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> <span class="keywordflow">return</span> i;</div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> }</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> }</div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> </div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> <span class="comment">/* We reach here only in case element is not present in array, return an</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="comment"> * invalid entry in that case*/</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> <span class="keywordflow">return</span> -1;</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span>}</div>
</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span></div>
<div class="foldopen" id="foldopen00037" data-start="{" data-end="}">
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"><a class="line" href="../../d9/d02/linear__search_8cpp.html#a483bb8ccf42aaf7375a83e91490eda1e"> 37</a></span><span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code hl_function" href="../../d9/d02/linear__search_8cpp.html#a483bb8ccf42aaf7375a83e91490eda1e">tests</a>() {</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> <span class="keywordtype">int</span> size = 4;</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> <span class="keywordtype">int</span> *array = <span class="keyword">new</span> <span class="keywordtype">int</span>[size];</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; size; i++) {</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> array[i] = i;</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> }</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> assert(<a class="code hl_function" href="../../d9/d02/linear__search_8cpp.html#a84ac3988a534eb60ca351ed6caf56d84">LinearSearch</a>(array, size, 0) == 0);</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> assert(<a class="code hl_function" href="../../d9/d02/linear__search_8cpp.html#a84ac3988a534eb60ca351ed6caf56d84">LinearSearch</a>(array, size, 1) == 1);</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> assert(<a class="code hl_function" href="../../d9/d02/linear__search_8cpp.html#a84ac3988a534eb60ca351ed6caf56d84">LinearSearch</a>(array, size, 2) == 2);</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> </div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">delete</span>[] array;</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> </div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> size = 6;</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> array = <span class="keyword">new</span> <span class="keywordtype">int</span>[size];</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; size; i++) {</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> array[i] = i;</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> }</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> </div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> assert(<a class="code hl_function" href="../../d9/d02/linear__search_8cpp.html#a84ac3988a534eb60ca351ed6caf56d84">LinearSearch</a>(array, size, 3) == 3);</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> assert(<a class="code hl_function" href="../../d9/d02/linear__search_8cpp.html#a84ac3988a534eb60ca351ed6caf56d84">LinearSearch</a>(array, size, 1) == 1);</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> assert(<a class="code hl_function" href="../../d9/d02/linear__search_8cpp.html#a84ac3988a534eb60ca351ed6caf56d84">LinearSearch</a>(array, size, 5) == 5);</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> </div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> std::cout &lt;&lt; <span class="stringliteral">&quot;All tests have successfully passed!\n&quot;</span>;</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keyword">delete</span>[] array; <span class="comment">// free memory up</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span>}</div>
</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span></div>
<div class="foldopen" id="foldopen00068" data-start="{" data-end="}">
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"><a class="line" href="../../d9/d02/linear__search_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4"> 68</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="../../d9/d02/linear__search_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a>() {</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="keywordtype">int</span> mode = 0;</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> </div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Choose mode\n&quot;</span>;</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Self-test mode (1), interactive mode (2): &quot;</span>;</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> </div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> std::cin &gt;&gt; mode;</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="keywordflow">if</span> (mode == 2) {</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> <span class="keywordtype">int</span> size = 0;</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> std::cout &lt;&lt; <span class="stringliteral">&quot;\nEnter the size of the array [in range 1-30 ]: &quot;</span>;</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> std::cin &gt;&gt; size;</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keywordflow">while</span> (size &lt;= 0 || size &gt; 30) {</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Size can only be 1-30. Please choose another value: &quot;</span>;</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> std::cin &gt;&gt; size;</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> }</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="keywordtype">int</span> *array = <span class="keyword">new</span> <span class="keywordtype">int</span>[size];</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keywordtype">int</span> key = 0;</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> </div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="comment">// Input for the array elements</span></div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Enter the array of &quot;</span> &lt;&lt; size &lt;&lt; <span class="stringliteral">&quot; numbers: &quot;</span>;</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; size; i++) {</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> std::cin &gt;&gt; array[i];</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> }</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> </div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> std::cout &lt;&lt; <span class="stringliteral">&quot;\nEnter the number to be searched: &quot;</span>;</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> std::cin &gt;&gt; key;</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> </div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keywordtype">int</span> index = <a class="code hl_function" href="../../d9/d02/linear__search_8cpp.html#a84ac3988a534eb60ca351ed6caf56d84">LinearSearch</a>(array, size, key);</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keywordflow">if</span> (index != -1) {</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Number found at index: &quot;</span> &lt;&lt; index &lt;&lt; <span class="stringliteral">&quot;\n&quot;</span>;</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Array element not found&quot;</span>;</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> }</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="keyword">delete</span>[] array;</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <a class="code hl_function" href="../../d9/d02/linear__search_8cpp.html#a483bb8ccf42aaf7375a83e91490eda1e">tests</a>(); <span class="comment">// run self-test implementations</span></div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> }</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span>}</div>
</div>
<div class="ttc" id="alinear__search_8cpp_html_a483bb8ccf42aaf7375a83e91490eda1e"><div class="ttname"><a href="../../d9/d02/linear__search_8cpp.html#a483bb8ccf42aaf7375a83e91490eda1e">tests</a></div><div class="ttdeci">static void tests()</div><div class="ttdoc">Self-test implementations.</div><div class="ttdef"><b>Definition</b> <a href="#l00037">linear_search.cpp:37</a></div></div>
<div class="ttc" id="alinear__search_8cpp_html_a84ac3988a534eb60ca351ed6caf56d84"><div class="ttname"><a href="../../d9/d02/linear__search_8cpp.html#a84ac3988a534eb60ca351ed6caf56d84">LinearSearch</a></div><div class="ttdeci">int LinearSearch(int *array, int size, int key)</div><div class="ttdoc">for IO operations</div><div class="ttdef"><b>Definition</b> <a href="#l00021">linear_search.cpp:21</a></div></div>
<div class="ttc" id="alinear__search_8cpp_html_ae66f6b31b5ad750f1fe042a706a4e3d4"><div class="ttname"><a href="../../d9/d02/linear__search_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a></div><div class="ttdeci">int main()</div><div class="ttdoc">Main function.</div><div class="ttdef"><b>Definition</b> <a href="#l00068">linear_search.cpp:68</a></div></div>
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