Checking value of argc [closed]

问题

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Closed 7 years ago.

I have problem with the number of argc that passed to program
so, when i check the argc it's not equal to 2 !!
need help, how can i solve that problem ?

C code snippet :

if (2 != argc) {
    fprintf(stderr, "Usage: %s <port>\n", argv[0]);
    exit(1);
}

回答1:

Don't forget that the program name itself counts as an arg.

myProgram -flag variable is an argc of 3

来源：https://stackoverflow.com/questions/12904222/checking-value-of-argc