Syntax:

#include <cmath> double pow( double base, double exp );

The pow() function returns base raised to the expth power. There's a domain error if base is zero and exp is less than or equal to zero. There's also a domain error if base is negative and exp is not an integer. There's a range error if an overflow occurs.

C++ also provides the following overloaded forms:

#include <cmath> float pow( float base, float exp ); // same as powf() in C99 long double pow( long double base, long double exp ); // same as powl() in C99

C++ also provides overloaded versions of pow() that perform integer exponentiation:

#include <cmath> float pow( float base, int exp ); double pow( double base, int exp ); long double pow( long double base, int exp );