Write a program to demonstrate refection of parameters in swapping of two integer values using Call by Value and Call by Address

Call by Value:

• Calling the function by passing value as parameter.
• We collect the value into an argument of function.
• Arguments are working like local variables.
• Processed arguments can access only from same function.

#include<stdio.h>
void swap(int, int);
int main()
{
	int a=10, b=20;	
	printf("Before Swap : %d \t %d \n", a, b);
	swap(a, b);
	printf("After Swap : %d \t %d \n", a, b);
	return 0;
}
void swap(int a, int b)
{
	int temp;
	temp = a;
	a = b;
	b = temp;
}

Call by Reference:

• Calling the function by passing address as parameter.
• We store address only into pointer variable.
• We use pointer type argument in the function definition to store that address.
• The modified data using the reference can access from the calling function.

#include<stdio.h>
void swap(int*, int*);
int main()
{
	int a=10, b=20;	
	printf("Before Swap : %d \t %d \n", a, b);
	
	swap(&a, &b);
	printf("After Swap : %d \t %d \n", a, b);
	return 0;
}
void swap(int* a, int* b)
{
	int temp;
	temp = *a;
	*a = *b;
	*b = temp;
}