Can't use <math.h>

Hi I'm learning C and now I want to use certain maths functions such as square root. But I can't make it work. It just send me back the number I write.

Code:

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

int main()
{
    double resultat = 0, nombre1 = 100;

    printf("Square root : \n");
    scanf("%lf", &nombre1);
    resultat = sqrt(nombre1);

    printf("%lf", nombre1);

return 0;

}

If I wirte square root 100 it just send me back 100, 49 sends back 49 and so on.

How can I make it work ? What about pow function ? It doesn't seem to work either.

Thanks a lot !

Why not print resultat instead of nombre1?

Originally Posted by zakiuz

Hi I'm learning C and now I want to use certain maths functions such as square root. But I can't make it work. It just send me back the number I write.

Code:

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

int main()
{
    double resultat = 0, nombre1 = 100;

    printf("Square root : \n");
    scanf("%lf", &nombre1);
    resultat = sqrt(nombre1);

    printf("%lf", nombre1);

return 0;

}

For starters you could print out the answer vice the input value:

Code:

   resultat = sqrt(nombre1);

   printf("%lf", nombre1);

Maybe you should print resultat vice nombre1 here.

I really got to pay more attention ! Thank you tabstop.

P.S: I forgot to translate the code in english I kept it in french lol

Originally Posted by zakiuz

I forgot to translate the code in english I kept it in french lol

Looks like C to me.


Quzah.

Originally Posted by quzah

Looks like C to me.
Quzah.

Lol...the only language you actually understand.

The variables name lol