C Program to show call by value

In this tutorial, we are going to write a C Program to show call-by-value in C Programming with practical program code and step-by-step full complete explanation.

C Program to show call by value

 
#include<stdio.h>
#include<conio.h>

void main()
{
	int a,b,swap();

	clrscr();

	a=5;
	b=10;
	printf("Value of a=%d & value of b=%d before swap ",a,b);
	
	swap(a,b);

	printf("\nvalue of a=%d & b=%d after swap",a,b);

	getch();
}

int swap(int x, int y)
{
	int temp;
	temp = x;
	x = y;
	y = temp;
}

Output

 
Value of a=5 & value of b=10 before swap
Value of a=5 & b=10 after swap