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    <p>Here is a simple way to use the <code>getline()</code> function :</p> <pre><code>#include &lt;iostream&gt; #include &lt;string&gt; using namespace std; int main(void) { string name; int age; cout &lt;&lt; "How old are you ?" &lt;&lt; endl; cin &gt;&gt; age; cin.ignore(); // for avoiding trouble with 'name' when we're gonne use getline() cout &lt;&lt; "What's your name ?" &lt;&lt; endl; getline(cin, name); system("PAUSE"); } </code></pre> <p>Don't forget it, if you use <code>cin</code> befor <code>getline()</code>, you have to put the line :</p> <pre><code>cin.ignore(); </code></pre> <p>So your code should looks like something like that :</p> <pre><code>int main() { vector&lt;person&gt; people; bool flag = true; int num_people = 0; //char*filename="names.txt"; people = read_file(); while(flag) { int sel = 0; string args; cout &lt;&lt; "1 - Sök del av personnamn" &lt;&lt; "\n" &lt;&lt; "2 - Sök städer" &lt;&lt; "\n" &lt;&lt; "3 - Avsluta" &lt;&lt; endl; cin &gt;&gt; sel; cin.ignore() if(sel == 1) { cout &lt;&lt; "Mata in delen av personnamnet" &lt;&lt; endl; getline(cin, args); print_result(find_in_names(people, args)); } else if(sel == 2) { cout &lt;&lt; "Mata in staden" &lt;&lt; endl; getline(cin, args); args = lower_letters(args); print_result(find_person_from_city(people, args)); } else if(sel==3) { flag=false; } else { cout &lt;&lt; "FEL, TRYCK OM!" &lt;&lt; endl; } } } </code></pre> <p>Here's some doc <a href="http://www.cplusplus.com/reference/istream/istream/ignore/" rel="nofollow">http://www.cplusplus.com/reference/istream/istream/ignore/</a>, hope it'll help;</p>
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