Issue with main arguments handling

Question

I can\'t compare main() arguments with const char* strings.

Simple code for explaining:

#include 

int main         


        

Answer 1

In this statement

if(argv[i]=="hello")

you compare pointers because the string literal is implicitly converted to const char * (or char * in C) that points to its first character. As the two pointers have different values the expression is always false. You have to use standard C function strcmp instead. For example

if( std::strcmp( argv[i], "hello" ) == 0 )

To use this function you should include header (in C++) or (in C).