Reverse an integer

#include <stdio.h>
#include <math.h>
int back[20];
int reverse(int number, int digits)
{
    int remainder = number%10;
    back[digits++] = remainder;
    number /= 10;
    if(number) reverse(number, digits);
    else{
        int j = 0, total = 0;
        for(int i=0; i < digits; i++)
            total += back[digits-1-i] * pow(10,j++);
        return total;
    }
}
int main(){
    int number;
    printf("Enter the number you want to reverse: ");
    scanf("%d",&number);
    printf("The reverse of %d is %d", number, reverse(number, 0));
}