C++ pow()

pow() Syntax

The syntax of the pow() function is:

pow(double base, double exponent);

pow() Parameters

The pow() function takes two parameters:

• base - the base value
• exponent - exponent of the base

pow() Return Value

The pow() function returns:

• the result of baseexponent
• 1.0 if exponent is zero
• 0.0 if base is zero

pow() Prototypes

The prototypes of pow() as defined in the cmath header file are:

double pow(double base, double exponent);

float pow(float base, float exponent);

long double pow(long double base, long double exponent);

// for other argument types
Promoted pow(Type1 base, Type2 exponent);

Since C++ 11,

• if any argument passed to pow() is long double, the return type Promoted is long double
• else, the return type Promoted is double

Example 1: C++ pow()

Output

3.4 ^ 4.4 = 218.025

Example 2: pow() With Different Arguments

Output

4.4 ^ -3 = 0.0117393
-4 ^ 6 = 4096