C Programming to find the power of any number

/* to find power */
#include<stdio.h>
#include<stdlib.h>
#include<math.h>
int main()
{
    float a,b,pw;
    printf("Enter base: ");
    scanf("%f",&a);
    printf("Enter index: ");
    scanf("%f",&b);
    pw=pow(a,b);
    printf("%f to the power %f is %f: ",a,b,pw);
    system("pause");
    return 0;
}