给出一个整数，使用for循环，将平方和立方打印成一个表

#include <stdio.h>  
int main( void )  
{  
    int lower, upper, index;  
    int square, cube;  

    printf("Enter starting integer: ");  
    scanf("%d", &lower);  
    printf("Enter ending integer: ");  
    scanf("%d", &upper);  

    printf("%5s %10s %15s/n", "num", "square", "cube");  
    for (index = lower; index <= upper; index++)  
    {  
        square = index * index;  
        cube = index * square;  
        printf("%5d %10d %15d/n", index, square, cube);  
    }  

    return 0;  
}