Question

Write a driver C++ program that will test the following functions in the same order they are written next. You can test your program by reading the following values: n1= 10 and n2= 20 from the user:

The main program sends the values of the variables n1 and n2 to the function. The function calculates the average and sends it back to main program through the parameter list as call by reference parameter and will not use the return statement.

Answer 1

#include <bits/stdc++.h>
using namespace std;

void cal_avg(int a,int b,double &avg){
avg = (a+b)/2.0;
}

int main(){
int a,b;
cin >> a >> b;
double avg;
cal_avg(a,b,avg);
cout << avg << endl;
return 0;
}