Question

14. Write two functions that take an integer parameter and return the square and the cube of this number, correspondingly. Write a C program that reads an integer and uses the functions to display the sum of the number's square and cube.

Answer 1

#include <stdio.h>

int square(int n) {
    return n * n;
}

int cube(int n) {
    return n * n * n;
}

int main() {
    int n;
    printf("Enter a positive integer: ");
    scanf("%d", &n);
    printf("square of %d is %d\n", n, square(n));
    printf("cube of %d is %d\n", n, cube(n));
    return 0;
}

Answer 2

include <iostream>

using namespace std;

 

/* Returns the sum of series */

int sumOfSeries(int n)

{

    int sum = 0;

    for (int x = 1; x <= n; x++)

        sum += x * x * x;

    return sum;

}

 

// Driver Function

int main()

{

    int n = 5;

    cout << sumOfSeries(n);

    return 0;

}