Header

[maacor80]

Could you tell me what should be the header I have to include in a C code to be possible to use the power function? I mena, I need to use,

pow(x,y)

whrw

x

and

y

are real numbers.

Thanks.

[whiteflags]

#include <math.h>

int main(void)
{
   double x = 10;
   double y = 3;
   double z = pow(x, y);
   return 0;
}

[dwks]

If by "real number" you mean a float, then powf() is what you're looking for. pow() operates on doubles, and there's another function for long doubles. Generally you can just use pow(), though, for floats and doubles.

pow*() is in <math.h>. On some systems, you may need to link with the math library to use them; for GCC, add -lm on the command line.