CPP

c++ call by value

#include <iostream>

using namespace std;

void increment(int n){
    n++;
   cout<<"In function: "<<n<<endl; 
}

int main()
{
   int x=5;
   increment(x);
   cout<<"In main: "<<x<<endl;
   
}

call by value in c++

// function definition to swap the values.
void swap(int x, int y) {
   int temp;

   temp = x; /* save the value of x */
   x = y;    /* put y into x */
   y = temp; /* put x into y */
  
   return;
}