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POCannot input more than one string in palindrome program
 

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    <pre><code>#include &lt;iostream&gt; #include &lt;ctype.h&gt; using namespace std; void isPalindrome(); int main() { char response; isPalindrome(); cout &lt;&lt; "Input another string(y/n)?" &lt;&lt; endl; cin &gt;&gt; response; response = toupper(response); if (response == 'Y') isPalindrome(); return 0; } void isPalindrome() { char str[80], str2[80]; int strlength; int j = 0; int front, back; bool flag = 1; cout &lt;&lt; "Input a string:" &lt;&lt; endl; cin.getline(str, 80); strlength = strlen(str); for (int i = 0; i &lt; strlength; i++) { if (islower(str[i])) str[i] = toupper(str[i]); } for (int i = 0; i &lt; strlength; i++) { if (isalpha(str[i])) { str2[j] = str[i]; j++; } } str2[j] = '\0'; front = 0; back = strlength - 1; for (int i = 0; i &lt; j / 2; i++) { if (str2[front] != str2[back]) { flag = 0; break; } } if (!(flag)) cout &lt;&lt; "It is not a palindrome" &lt;&lt; endl; else cout &lt;&lt; "It's a palindrome" &lt;&lt; endl; cout &lt;&lt; "str: " &lt;&lt; str &lt;&lt; " str2: " &lt;&lt; str2 &lt;&lt; " strlength: " &lt;&lt; strlength &lt;&lt; " j: " &lt;&lt; j &lt;&lt; endl; cout &lt;&lt; "front: " &lt;&lt; front &lt;&lt; " back: " &lt;&lt; back &lt;&lt; " flag: " &lt;&lt; flag &lt;&lt; endl; } </code></pre> <p>I was just wondering if anybody could help explain to me why my code isn't working.</p> <p>I can run it once just fine and I get the right answer, but when the prompt asks if I want to input another string and I type <code>'y'</code>, the prompt just skips over the input and terminates on it's own.</p> <p>I tried <code>cin.ginore('\n', 80)</code>, but that just gave me a bunch of blank lines. I added the bit of code at the end to check the values and they all go to <code>0</code> and drop the strings.</p> <p>Maybe a link to a proper explanation of how the system handles memory?</p> <p>edit: I keep getting the same problem when running the input sequence a second time. The output looks like this: </p> <pre><code> Input a string: Radar It's a palindrome Input another string(y/n)? y _ &lt;- this being my cursor after pressing enter 3 times </code></pre> <p>I'll just re-build the program from scratch and try to do it without a function. I'd still appreciate a link to a page that explains how to process user input using modern c++.</p>
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    1. USlvl1_monk
    1. USlvl1_monk
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    1. COI surely don't want to read through that *mess* to explain anything, but if you're interested in how to process user input using modern C++, let me know and I can post that.
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      1. USKerrek SB
    2. CO@KerrekSB Or you can post a link so you don't have to reinvent the wheel, right? :)
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      1. USMateen Ulhaq
    3. COI would certainly appreciate that. I'm going to be working on this all night if I have to, so any help would be greatly appreciate.
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      1. USlvl1_monk
 

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