Checking argv[] against a string? (C++)

Question

So I\'m attempting to check the arguments that I\'m inputting into my program, and one of them is either the word \"yes\" or \"no\", entered without the quotes.

I\'

Answer 1

You're comparing pointers. Use strcmp, or std::string.

int main(int argc, char * argv[]) {

  if (argv[1] == "yes"); // Wrong, compares two pointers
  if (strcmp(argv[1], "yes") == 0); // This compares what the pointers point to
  if (std::string(argv[1]) == "yes"); // Works fine
  if (argv[1] == std::string("yes")); // Works fine

  // Easy-mode    
  std::vector args(argv, argv+argc);
  for (size_t i = 1; i < args.size(); ++i) {
      if (args[i] == "yes") {
          // do something
      }
  }

}