Comparing command parameter with argv[] is not working

Question

I am trying to compare the parameter of command with argv[] but it\'s not working. Here is my code.

./a.out -d 1

In main function

Answer 1

In C++ let std::string do the work for you:

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

if (argv[1] == std::string("-d"))

// call some function here

}

In C you'll have to use strcmp:

if (strcmp(argv[1], "-d") == 0)

// call some function here

}