Pow function in C outputting strange values

Question

I am having trouble using the pow function in c. The following code:

#include <stdio.h>
#include <math.h> 
int main(int argc, char **argv) 
{
 double t;
 for(t = 2; t <= 7; t++)
 {
 double num = pow(7,t);
 printf("pi(%d) =", pow(7,t));
 }
}

outputs:

pi(1075576832) =pi(807) =pi(431) =pi(53) =pi(701) =pi(323)

instead of outputting pi(49) = pi(7^3) = and so on.

Any help would be much appreciated.

Answer 1

That's because of wrong modifier. Use %f for double numbers: printf("pi(%f) =", pow(7,t));