problems with argc, *argv[]

[AeonFlux1212]

Here's my code:

const unsigned short NB_TOTAL_ELEMENTS = 81;

int main(int argc, char *argv[])
{
    unsigned short tableau[NB_TOTAL_ELEMENTS];
    
    for(unsigned short i = 1; i < argc; i++)
    {
        if(argv[i] == "0")
        {
            tableau[i-1] = 0;
        }
        else if(argv[i] == "1")
        {
            tableau[i-1] = 1;
        }
        else if(argv[i] == "2")
        {
            tableau[i-1] = 2;
        }
        else if(argv[i] == "3")
        {
            tableau[i-1] = 3;
        }
        else if(argv[i] == "4")
        {
            tableau[i-1] = 4;
        }
        else if(argv[i] == "5")
        {
            tableau[i-1] = 5;
        }
        else if(argv[i] == "6")
        {
            tableau[i-1] = 6;
        }
        else if(argv[i] == "7")
        {
            tableau[i-1] = 7;
        }
        else if(argv[i] == "8")
        {
            tableau[i-1] = 8;
        }
        else
        {
            tableau[i-1] = 9;
        }
    }
    
    cout << argc << endl << endl;
    
    for(int i = 0; i < NB_TOTAL_ELEMENTS; i++)
    {
        cout << tableau[i] << endl;
    }
    
    system("PAUSE");
    return EXIT_SUCCESS;
}

my problem is that for some reason my array (tableau[]) gets filled with 9 (in other words, every argument fall into the "else" section of my if..else if structure), instead of the following arguments (81 in total)

5 0 6 4 0 0 0 2 0 2 0 0 0 3 1 7 0 4 0 7 0 2 0 0 0 0 0 8 0 5 7 0 0 2 0 9 0 4 0 0 8 0 0 3 0 9 0 3 0 0 6 1 0 8 0 0 0 0 0 9 0 6 0 6 0 7 8 2 0 0 0 3 0 1 0 0 0 5 9 0 7

I can't find the mistake can you help me out? thanks a lot!

[Aramil of Elixia]

ur subtracting ints from chars

[AeonFlux1212]

I'm not sure that this is the problem, because the purpose of having an if...else if nest is to not do that... you see what I mean? I say if argument == (string) "8" (or "6" or whatever), assign a certain value to an array... but that doesn't seem to work, that's what I don't understand... I see what you mean but I thought I corrected this mistake, when I figured out I was passing chars to int, by nesting the thing with if..else if...

[Aramil of Elixia]

what?? that is the problem. "9" is a char so "9" - 1 is the same as "a" - 1

[AeonFlux1212]

well I'm not doing that, I say if argv[i] == "4" (a string), assign an int to an array... I don't see what's wrong with that.... the problem is that my array gets filled with 9s instead of the parameters I give... but let's say you're right How should I do it then?

[firedraco]

You can't compare C-strings using ==. Use strcmp.

[AeonFlux1212]

it's working thanks a lot!