9.(C) Print Cubic sum of first n natural number

 #include <stdio.h>

int main()

{

    int a, b, sum = 0;

    printf("Enter the value of a\n");

    scanf("%d", &a);

    for (b = 1; b <= a; b++)  /* 31 jan,2022 If we print something under loop

    parenthesis then it will also print those number  which we dont need*/

    {

        sum += b * b * b;

    }

    printf("The Cubic sum of  [1 to %d]is %d\n", a, sum);

    return 0;

}