C-Program Swapping Contents Of Variables Using Function [Call By Reference Method]

//Header Files [Standard Library]

#include
#include

// User defined functions swap with 2 pointer variables passed as an argument list

void swap(int*i,int*j)
{

// Local variable temp
 int temp;
 // swapping contents using third variable temp
 temp=*i;
 *i=*j;
 *j=temp;

}

//Main function[Execution starts from main method]
void main()
{
 int a,b;

//Function for clearing screen
 clrscr();

//Taking input from user
 printf("Enter value for a:");
 scanf("%d",&a);
 printf("Enter value for b:");
 scanf("%d",&b);

//Printing on console

 printf("**Before swapping**\n");
 printf("value of a=%d\t",a);
 printf("value of b=%d\n",b);
 swap(&a,&b);

 printf("**After swapping**\n");
 printf("value of a=%d\t",a);
 printf("value of b=%d",b);

// Function for holding screen on console 

getch();

}