水仙花数

#include<stdio.h>
#include<math.h>
int main()
{
    int num, a, b, c, total;
    scanf("%d", &num);
    a = num / 100;
    b = num / 10 % 10;
    c = num % 10;
    total = pow(a, 3) + pow(b, 3) + pow(c, 3);
    if (total == num)
        printf("%d=%d的次方+%d的次方+%d的次方", num, a, b, c);
    else
        printf("不是水仙花数");
    return 0;
}