C Tutorial/math.h/exp
exp
Item Value Header file math.h Declaration float expf(float arg);double exp(double arg);long double expl(long double arg); Return returns the natural logarithm e raised to the arg power.
#include <math.h>
#include <stdio.h>
int main(void)
{
printf("Value of e to the first: %f.", exp(1.0));
}