Question

Write a C++ program to compute the value of x * (x + 1) + y * y + z * (z - 1) where x, y, and z are 3 floating point numbers entered by the user. Requirements: • You should have a function get3numbers() that asks the user to enter 3 numbers. • You should have a function computeExp() that computes the value of the expression. • Your main function should call the above 2 functions and get the job done. • You must determine the parameters and returning values of all those functions.

Answer 1

#include<iostream>
using namespace std;

void get3numbers(float& x, float& y, float& z){
   cout<<"Enter value for x: ";
   cin>>x;
   cout<<"Enter value for y: ";
   cin>>y;
   cout<<"Enter value for z: ";
   cin>>z;
}

float computeExp(float x, float y, float z){
   return x * (x + 1) + y * y + z * (z - 1);
}

int main(){
   float x, y, z, res;
   get3numbers(x,y,z);
   res = computeExp(x,y,z);
   
   cout<<"Result = "<<res<<endl;
   
   return 0;
}