assign by reference c code example

Example 1: reference function in c++

// function definition to swap the values.
void swap(int &x, int &y) {
   int temp;
   temp = x; /* save the value at address x */
   x = y;    /* put y into x */
   y = temp; /* put x into y */
  
   return;
}

Example 2: call by reference

//Call By Reference

#include<stdio.h>
void function(int *, int *);       //function declaration
int main()
{
	int a,b;
    
    printf("Enter first number: ");
    scanf("%d",&a);
    printf("Enter second number: ");
    scanf("%d",&b);
    
    function(&a,&b);    //passing the address of both the variables( CALL BY REFERENCE)

}
void function(int *p,int *q)     //function defination
{
   printf("printing variables from function a=%d b=%d",*p,*q);
}
//code by Dungriyal..