Need a c program for a plus b plus whole square?

Answer 1

#include<iostream>

int main() {

std::cout << "Enter value a: ";

double a;

std::cin >> a;

std::cout << "Enter value b: ";

double b;

std::cin >> b;

double sum {a+b};

std::cout << "a + b + (a + b) * (a + b) = " << sum + sum * sum << std::endl;

}