Question

Write a C++ program using separate void which asks the user to input side of a square, radius of a circle , height and base of a triangle and finds the area of squares, circles and triangles. Then using main function display the area of square, circle and triangle

Answer 1

#include<iostream>
using namespace std;
//reads the input into variables using references
void readInput(double &side,double &radius,double &height ,double &base){
        cout<<"Enter side of sqaure: ";
        cin>>side;
        cout<<"Enter radius of circle: ";
        cin>>radius;
        cout<<"Enter base and height of triangle: ";
        cin>>base>>height;
}
int main(){
        double side,radius,height,base;
        readInput(side,radius,height,base);
        // formula : a^2
        cout<<"Square area: "<<side * side<<endl;
        // formula 2 PI R
        cout<<"Circle area: "<<2 * 3.1415 * radius<<endl;
        // formula BH/2
        cout<<"Triangle area: "<<base * height/2<<endl;
        
}