1(1次方)+2(2次方)+3(3次方)+.....+n(n次方) @ Walter Blyss的部落格

Jul 18 Sat 2009 11:12
1(1次方)+2(2次方)+3(3次方)+.....+n(n次方)

#include <stdio.h>
int retNum(int i);
int main() {
    int i, j, y, z;
    int sum = 0;

int retNum(int i) {
   int tmp = i;
   y = 1;
   while( y < i ) {
       tmp = tmp * i;
       y++;
   }
   return tmp;
}

    printf("Please input a number : ");
    scanf("%d",&i);
    for( j = 0; j < i; i--) {
        z = retNum(i);
        sum = sum + z;
    }
    printf("Sum is : %d\n",sum);

return 0;
}