CareerCup

returning pointer to stack variable which will be deleted as soon as function returns

Generates a null-terminated sequence of characters (c-string) with the same content as the string object and returns it as a pointer to an array of characters.

A terminating null character is automatically appended.

The returned array points to an internal location with the required storage space for this sequence of characters plus its terminating null-character, but the values in this array should not be modified in the program and are only granted to remain unchanged until the next call to a non-constant member function of the string object.

This would work:
const char *myfunc()
{
char *cstr;
string str("return this");
cstr = new char [str.size()+1];
strcpy (cstr, str.c_str());

return cstr;
}

Tried this:-

#include <iostream>
#include <string>

using namespace std;

const char *func() {
  string str("hello world");
  return str.c_str();
}


int main() {
  cout << func();

  return 0;
}

it printed: hello world