C++ .exe has stopped working - error in code - c++11

Question

I wrote a small program in c++, and it doesn't have any error on compile time but when I run the program, I'm facing with an error.
Following is my code :
#include <iostream>
#include <fstream>
#include <string>
#include <sstream>
#include <stack>
#include <queue>
#include "QueType.h"
#include "StackType.h"
#include "tools.hpp"
#include <locale>
#include <list>
using namespace std;
bool isPalindrome(const string& stringToCheck)
{
string line2;
bool pal;
string wrdF;
stack<char> word1;
queue<char> word2;
char x,y;
line2=stringToCheck;
// make lowercase
for (size_t j=0; j< line2.length(); ++j)
{
line2[j] = tolower(line2[j]);
}
std::locale loc;
std::string str = line2 ;
std::string::size_type al=0;
wrdF = "";
std::string::size_type al2 = 0;
while ( (al<str.length()) ) {
if (std::isalnum(str[al])) {
wrdF += str[al];
al2++;
}
++al;
}
ItemType* items = new ItemType[al2];
strcpy(items,wrdF.c_str());
int oo=(int)al2;
for (int q=0;q<oo ;q++)
{
if (items[q] != ' ') {
word1.push(items[q]);
word2.push(items[q]);
}
}
pal = true;
while (!word1.empty() && !word2.empty())
{
x=word1.top();
y=word2.front();
if (x != y)
{
cout << "No palindrome" << endl;
pal=false;
break;
}
else
{
word1.pop();
word2.pop();
}
}
if (pal == true)
cout << " palindrome" << endl;
return(pal);
}
int main()
{
int row=0;
string line;
bool pali;
ifstream myfile ("palindrome-testfile.txt");
ofstream palin("palindromes.log");
ofstream nopalin("nopalindromes.log");
if (myfile.is_open())
{
while ( getline (myfile,line) )
{
// cout << line << '\n';
++row;
// cout<<row<<". ";
pali= isPalindrome(line);
if (pali)
{
palin << line << endl;
}
else
{
nopalin << line << endl;
}
}
myfile.close();
}
else cout << "Unable to open file";
return 0;
}
Please help me to resolve it. Thanks in advance.
Capture of error

Answer 1

As Igor Tandetnik pointed out the problem is with the ItemType pointer. Which also leaks memory.
I wrote a similar code that checks if a word is palindrome. The cppreference example for std::equal is a is_palindrome function.
I am not sure about why you need the step for std::isalnum. That one will return true for numbers too. std::isalpha will return true only if they are are letters, see cppreference doc for isalpha
Let me know if you need any clarifications.
#include <algorithm>
#include <string>
#include <sstream>
#include <iostream>
#include <fstream>
bool isPalindrome(const std::string& str) {
return std::equal(str.begin(), str.begin() + str.size() / 2, str.rbegin());
}
int main() {
std::ifstream myfile("palindrome-testfile.txt");
if(!myfile.is_open()) {
std::cerr<< "Could not open file" << std::endl;
} else {
std::string word;
//operator >> will read words until you reach eof()
myfile >> word;
while(!myfile.eof()){
auto str = word;
//here I delete anything that is not alnum
str.erase(std::find_if(str.begin(), str.end(),
[](unsigned char c) { return !std::isalnum(c); }));
//Making all characters of the string lower case
std::transform(str.begin(), str.end(), str.begin(),
[](unsigned char c) { return std::tolower(c); });
if(isPalindrome(str)) {
std::cout << "[" << str <<"] is palindrome" << std::endl;
} else {
std::cout << "[" << str <<"] is not palindrome" << std::endl;
}
myfile >> word;
}
myfile.close();
}
return 0;
}