C library functions - exp ()

C standard library - <math.h>

description

The value of C library functionsdouble exp (double x) Returns eraised to the power ofx.

statement

Here is exp () function's declaration.

double exp(double x)

parameter

• x - floating-point value.

return value

This function returns e raised to the power of x.

Examples

The following example demonstrates the exp () function is used.

#include <stdio.h>
#include <math.h>

int main ()
{
   double x = 0;
  
   printf("e 的 %lf 次幂是 %lf\n", x, exp(x));
   printf("e 的 %lf 次幂是 %lf\n", x+1, exp(x+1));
   printf("e 的 %lf 次幂是 %lf\n", x+2, exp(x+2));
   
   return(0);
}

Let's compile and run the above program, which will result in the following:

e 的 0.000000 次幂是 1.000000
e 的 1.000000 次幂是 2.718282
e 的 2.000000 次幂是 7.389056

C standard library - <math.h>