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<div id="projectbrief">Set of algorithms implemented in C++.</div>
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<p>Search for words in a long textual paragraph.
<a href="#details">More...</a></p>
<div class="textblock"><code>#include &lt;cassert&gt;</code><br />
<code>#include &lt;cstdlib&gt;</code><br />
<code>#include &lt;iostream&gt;</code><br />
<code>#include &lt;cstring&gt;</code><br />
</div><div class="textblock"><div class="dynheader">
Include dependency graph for text_search.cpp:</div>
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Functions</h2></td></tr>
<tr class="memitem:a3f8975d227cd0e58f298b380c5dac0d9"><td class="memItemLeft" align="right" valign="top"><a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../dc/db5/text__search_8cpp.html#a3f8975d227cd0e58f298b380c5dac0d9">lower</a> (<a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> word)</td></tr>
<tr class="memdesc:a3f8975d227cd0e58f298b380c5dac0d9"><td class="mdescLeft">&#160;</td><td class="mdescRight">function to convert a C++ string to lower case <br /></td></tr>
<tr class="separator:a3f8975d227cd0e58f298b380c5dac0d9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa8dca7b867074164d5f45b0f3851269d"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../dc/db5/text__search_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a> ()</td></tr>
<tr class="memdesc:aa8dca7b867074164d5f45b0f3851269d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Self-test implementations. <br /></td></tr>
<tr class="separator:aa8dca7b867074164d5f45b0f3851269d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../dc/db5/text__search_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a> ()</td></tr>
<tr class="memdesc:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Main function. <br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Search for words in a long textual paragraph. </p>
</div><h2 class="groupheader">Function Documentation</h2>
<a id="a3f8975d227cd0e58f298b380c5dac0d9" name="a3f8975d227cd0e58f298b380c5dac0d9"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3f8975d227cd0e58f298b380c5dac0d9">&#9670;&#160;</a></span>lower()</h2>
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<td class="memname"><a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> lower </td>
<td>(</td>
<td class="paramtype"><a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a>&#160;</td>
<td class="paramname"><em>word</em></td><td>)</td>
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<p>function to convert a C++ string to lower case </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">word</td><td>takes an <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> as input </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd><a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> </dd></dl>
<div class="fragment"><div class="line"><span class="lineno"> 19</span> {</div>
<div class="line"><span class="lineno"> 20</span> <span class="keywordtype">int</span> length = word.<a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string/size.html">length</a>();</div>
<div class="line"><span class="lineno"> 21</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> lc = <span class="stringliteral">&quot;&quot;</span>;</div>
<div class="line"><span class="lineno"> 22</span> </div>
<div class="line"><span class="lineno"> 23</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; length; i++) {</div>
<div class="line"><span class="lineno"> 24</span> lc += <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/byte/tolower.html">tolower</a>(word[i]);</div>
<div class="line"><span class="lineno"> 25</span> }</div>
<div class="line"><span class="lineno"> 26</span> </div>
<div class="line"><span class="lineno"> 27</span> <span class="keywordflow">return</span> lc;</div>
<div class="line"><span class="lineno"> 28</span>}</div>
<div class="ttc" id="abasic_string_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div></div>
<div class="ttc" id="asize_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/basic_string/size.html">std::string::length</a></div><div class="ttdeci">T length(T... args)</div></div>
<div class="ttc" id="atolower_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/byte/tolower.html">std::tolower</a></div><div class="ttdeci">T tolower(T... args)</div></div>
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<h2 class="memtitle"><span class="permalink"><a href="#ae66f6b31b5ad750f1fe042a706a4e3d4">&#9670;&#160;</a></span>main()</h2>
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<td class="memname">int main </td>
<td>(</td>
<td class="paramtype">void&#160;</td>
<td class="paramname"></td><td>)</td>
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<p>Main function. </p>
<dl class="section return"><dt>Returns</dt><dd>0 on exit </dd></dl>
<div class="fragment"><div class="line"><span class="lineno"> 44</span> {</div>
<div class="line"><span class="lineno"> 45</span> <a class="code hl_function" href="../../dc/db5/text__search_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a>(); <span class="comment">// run self-test implementations</span></div>
<div class="line"><span class="lineno"> 46</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> paragraph;</div>
<div class="line"><span class="lineno"> 47</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;Please enter your paragraph: \n&quot;</span>;</div>
<div class="line"><span class="lineno"> 48</span> <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string/getline.html">std::getline</a>(<a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a>, paragraph);</div>
<div class="line"><span class="lineno"> 49</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;\nHello, your paragraph is:\n &quot;</span> &lt;&lt; paragraph &lt;&lt; <span class="stringliteral">&quot;!\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 50</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;\nThe size of your paragraph = &quot;</span> &lt;&lt; paragraph.<a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string/size.html">size</a>()</div>
<div class="line"><span class="lineno"> 51</span> &lt;&lt; <span class="stringliteral">&quot; characters. \n\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 52</span> </div>
<div class="line"><span class="lineno"> 53</span> <span class="keywordflow">if</span> (paragraph.<a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string/empty.html">empty</a>()) {</div>
<div class="line"><span class="lineno"> 54</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;\nThe paragraph is empty&quot;</span> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 55</span> } <span class="keywordflow">else</span> {</div>
<div class="line"><span class="lineno"> 56</span> <span class="keywordtype">int</span> ch = 0;</div>
<div class="line"><span class="lineno"> 57</span> <span class="keywordflow">while</span> (<span class="keyword">true</span>) {</div>
<div class="line"><span class="lineno"> 58</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> word;</div>
<div class="line"><span class="lineno"> 59</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;Please enter the word you are searching for: &quot;</span>;</div>
<div class="line"><span class="lineno"> 60</span> <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string/getline.html">std::getline</a>(<a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a>, word);</div>
<div class="line"><span class="lineno"> 61</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;Ignore case-sensitive? 1 = Yes, 0 = No&quot;</span> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 62</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a> &gt;&gt; ch;</div>
<div class="line"><span class="lineno"> 63</span> <span class="keywordflow">if</span> (ch == 1) {</div>
<div class="line"><span class="lineno"> 64</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> lowerCase = <a class="code hl_function" href="../../dc/db5/text__search_8cpp.html#a3f8975d227cd0e58f298b380c5dac0d9">lower</a>(</div>
<div class="line"><span class="lineno"> 65</span> paragraph); <span class="comment">// convert std::string paragraph to lowercase</span></div>
<div class="line"><span class="lineno"> 66</span> <span class="comment">// and store it in std::string lowerCase</span></div>
<div class="line"><span class="lineno"> 67</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> lowerCaseWord =</div>
<div class="line"><span class="lineno"> 68</span> <a class="code hl_function" href="../../dc/db5/text__search_8cpp.html#a3f8975d227cd0e58f298b380c5dac0d9">lower</a>(word); <span class="comment">// convert std::string paragraph to lowercase</span></div>
<div class="line"><span class="lineno"> 69</span> <span class="comment">// and store it in std::string lowerCase</span></div>
<div class="line"><span class="lineno"> 70</span> </div>
<div class="line"><span class="lineno"> 71</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;Hello, your word is &quot;</span> &lt;&lt; word &lt;&lt; <span class="stringliteral">&quot;!\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 72</span> <span class="keywordflow">if</span> (lowerCase.<a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string/find.html">find</a>(lowerCaseWord) == std::string::npos) {</div>
<div class="line"><span class="lineno"> 73</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; word &lt;&lt; <span class="stringliteral">&quot; does not exist in the sentence&quot;</span></div>
<div class="line"><span class="lineno"> 74</span> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 75</span> } <span class="keywordflow">else</span> {</div>
<div class="line"><span class="lineno"> 76</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;The word &quot;</span> &lt;&lt; word</div>
<div class="line"><span class="lineno"> 77</span> &lt;&lt; <span class="stringliteral">&quot; is now found at location &quot;</span></div>
<div class="line"><span class="lineno"> 78</span> &lt;&lt; lowerCase.<a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string/find.html">find</a>(lowerCaseWord) &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a></div>
<div class="line"><span class="lineno"> 79</span> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 80</span> }</div>
<div class="line"><span class="lineno"> 81</span> } <span class="keywordflow">else</span> {</div>
<div class="line"><span class="lineno"> 82</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;Hello, your word is &quot;</span> &lt;&lt; word &lt;&lt; <span class="stringliteral">&quot;!\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 83</span> <span class="keywordflow">if</span> (paragraph.<a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string/find.html">find</a>(word) == std::string::npos) {</div>
<div class="line"><span class="lineno"> 84</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; word &lt;&lt; <span class="stringliteral">&quot; does not exist in the sentence&quot;</span></div>
<div class="line"><span class="lineno"> 85</span> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 86</span> } <span class="keywordflow">else</span> {</div>
<div class="line"><span class="lineno"> 87</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;The word &quot;</span> &lt;&lt; word</div>
<div class="line"><span class="lineno"> 88</span> &lt;&lt; <span class="stringliteral">&quot; is now found at location &quot;</span></div>
<div class="line"><span class="lineno"> 89</span> &lt;&lt; paragraph.<a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string/find.html">find</a>(word) &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a></div>
<div class="line"><span class="lineno"> 90</span> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 91</span> }</div>
<div class="line"><span class="lineno"> 92</span> }</div>
<div class="line"><span class="lineno"> 93</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;\nPress Ctrl + C to exit the program.\n\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 94</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_istream.html">std::cin</a>.get();</div>
<div class="line"><span class="lineno"> 95</span> }</div>
<div class="line"><span class="lineno"> 96</span> }</div>
<div class="line"><span class="lineno"> 97</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><span class="lineno"> 98</span>}</div>
<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="atext__search_8cpp_html_a3f8975d227cd0e58f298b380c5dac0d9"><div class="ttname"><a href="../../dc/db5/text__search_8cpp.html#a3f8975d227cd0e58f298b380c5dac0d9">lower</a></div><div class="ttdeci">std::string lower(std::string word)</div><div class="ttdoc">function to convert a C++ string to lower case</div><div class="ttdef"><b>Definition:</b> text_search.cpp:19</div></div>
<div class="ttc" id="atext__search_8cpp_html_aa8dca7b867074164d5f45b0f3851269d"><div class="ttname"><a href="../../dc/db5/text__search_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a></div><div class="ttdeci">static void test()</div><div class="ttdoc">Self-test implementations.</div><div class="ttdef"><b>Definition:</b> text_search.cpp:34</div></div>
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<h2 class="memtitle"><span class="permalink"><a href="#aa8dca7b867074164d5f45b0f3851269d">&#9670;&#160;</a></span>test()</h2>
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<td class="memname">static void test </td>
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<p>Self-test implementations. </p>
<dl class="section return"><dt>Returns</dt><dd>void </dd></dl>
<div class="fragment"><div class="line"><span class="lineno"> 34</span> {</div>
<div class="line"><span class="lineno"> 35</span> assert(<a class="code hl_function" href="../../dc/db5/text__search_8cpp.html#a3f8975d227cd0e58f298b380c5dac0d9">lower</a>(<span class="stringliteral">&quot;abcd&quot;</span>).<a class="code hl_struct" href="../../d1/db3/structcompare.html">compare</a>(<span class="stringliteral">&quot;abcd&quot;</span>) == 0);</div>
<div class="line"><span class="lineno"> 36</span> assert(<a class="code hl_function" href="../../dc/db5/text__search_8cpp.html#a3f8975d227cd0e58f298b380c5dac0d9">lower</a>(<span class="stringliteral">&quot;abc&quot;</span>).<a class="code hl_struct" href="../../d1/db3/structcompare.html">compare</a>(<span class="stringliteral">&quot;abcd&quot;</span>) == -1);</div>
<div class="line"><span class="lineno"> 37</span> assert(<a class="code hl_function" href="../../dc/db5/text__search_8cpp.html#a3f8975d227cd0e58f298b380c5dac0d9">lower</a>(<span class="stringliteral">&quot;abcd&quot;</span>).<a class="code hl_struct" href="../../d1/db3/structcompare.html">compare</a>(<span class="stringliteral">&quot;abc&quot;</span>) == 1);</div>
<div class="line"><span class="lineno"> 38</span>}</div>
<div class="ttc" id="astructcompare_html"><div class="ttname"><a href="../../d1/db3/structcompare.html">compare</a></div><div class="ttdef"><b>Definition:</b> huffman.cpp:28</div></div>
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