Question

Write a function called addOne that adds 1 to its integer reference parameter. The function returns nothing, but change the value of the reference parameter permanently. And write the call statement, outside of the function, which shows using a variable (you give it a name) as the argument.

Answer 1

#include <iostream>

using namespace std;

void addOne(int &n){
   n = n + 1;
}

int main(){
   int n = 5;
   addOne(n);
   cout<<"n = "<<n<<endl;
   return 0;
}
  

n = 6