Question

Write a function to calculate the surface area using pointer, it returns a value

USING THE C++

Answer 1

#include <iostream>

using namespace std;

void surface_area(double radius, double *area) {
    *area = 4 * 3.14159 * radius * radius;
}

int main() {
    double r, area;
    cout << "Enter radius of sphere: ";
    cin >> r;
    surface_area(r, &area);
    cout << "Surface area of sphere is " << area << endl;
    return 0;
}