pow()
Published Oct 31, 2022Updated Dec 21, 2022
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The pow()
function returns the result of a base value raised to the power of an exponent.
Syntax
pow(base, exponent)
The base
and exponent
parameters are integers or of type float
. If base
is zero, the function returns 0.0
. If exponent
is zero, the function returns 1.0
.
- A domain error may occur if the
base
is a float andexponent
is not an integer value. - A pole or range error may occur due to overflow.
- A range error may occur due to underflow.
Example
The following example uses the pow()
function to raise 2
to the power of 2
:
#include <iostream>#include <cmath>int main() {double base = 2;double exponent = 2;double result = pow(base, exponent);std::cout << base << " raised to the power of " << exponent << " equals " << result << ".\n";// Output: 2 raised to the power of 2 equals 4}
Codebyte Example
The following example is runnable and uses the pow()
function to find the nth-root of 16
by raising the base to the reciprocal of the desired root:
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