C Program to Swap Two Numbers

C Program to Swap Two Numbers

C program to swap two numbers; Through this tutorial, we will learn how to swap two numbers in c program using third variable, pointers, functions, call by reference and bitwise or operator.

Programs to Swap Two Numbers in C

  • C Program to Swap Two Numbers using Third Variable
  • C Program to Swap Two Numbers Using Pointers
  • C Program to Swap Two Numbers Using Functions
  • C Program to Swap Two Numbers Using Call By Reference
  • C Program to Swap Two Numbers Using Bitwise OR Operator

C Program to Swap Two Numbers using Third Variable

#include <stdio.h>

int main()
{
  int a, b, Temp;
 
  printf("\nPlease Enter the value of a and b :- ");
  scanf("%d %d", &a, &b);
 
  printf("\nBefore Swap: a = %d and b = %d\n", a, b);
 
  Temp = a;
  a    = b;
  b    = Temp;
 
  printf("\nAfter Swapping: a = %d and b = %d\n", a, b);
 
  return 0;
}

The output of the above c program; as follows:

Please Enter the value of a and b :- 20 40
Before Swap: a = 20 and b = 40

After Swapping: a = 40 and b = 20

C Program to Swap Two Numbers Using Pointers

#include <stdio.h>

int main()
{
  int a, b, *i, *j, Temp;
 
  printf("\nPlease Enter the value of a and b :- ");
  scanf("%d %d", &a, &b);
 
  printf("\nBefore Swap: a = %d  b = %d\n", a, b);
  i = &a;
  j = &b;
  
  Temp = *i;
  *i    = *j;
  *j    = Temp;
 
  printf("\nAfter Swapping: a = %d  b = %d\n", a, b);
  printf("\nAfter Swapping: i = %d  j = %d\n", *i, *j);

  return 0;
}

The output of the above c program; as follows:

Please Enter the value of a and b :- 50 60
Before Swap: a = 50  b = 60

After Swapping: a = 60  b = 50

After Swapping: i = 60  j = 50

C Program to Swap Two Numbers Using Functions

#include <stdio.h>
 
void Swap(int, int);
 
int main()
{
  int A, B;
 
  printf("\nPlease Enter the value of A and B :- ");
  scanf("%d %d", &A, &B);
 
  printf("\nBefore Swap: A = %d and A = %d\n", A, B);
 
  Swap(A, B); 
 
  return 0;
}
 
void Swap(int A, int B)
{
  int Temp;
 
  Temp = A;
  A = B;
  B = Temp;   
  
  printf("\nAfter Swapping: A = %d and B = %d\n", A, B);
}

The output of the above c program; as follows:

Please Enter the value of A and B :- 50 70
Before Swap: A = 50 and A = 70

After Swapping: A = 70 and B = 50

C Program to Swap Two Numbers Using Call By Reference

#include <stdio.h>

int main()
{
  int a, b;
 
  printf("\nPlease Enter the value of a and b :- ");
  scanf("%d %d", &a, &b);
 
  printf("\nBefore Swap: a = %d  b = %d\n", a, b);
 
  a = a + b;
  b = a - b; 
  a = a - b;
 
  printf("\nAfter Swapping: a = %d  b = %d\n", a, b);
 
  return 0;
}

The output of the above c program; as follows:

Please Enter the value of a and b :- 66 89
Before Swap: a = 66  b = 89

After Swapping: a = 89  b = 66

C Program to Swap Two Numbers Using Bitwise OR Operator

/* Swap Two Numbers Using Bitwise OR Operator */
#include <stdio.h>

int main()
{
  int a, b;
 
  printf("\nPlease Enter the value of a and b :- ");
  scanf("%d %d", &a, &b);
 
  printf("\nBefore Swap: a = %d  b = %d\n", a, b);
 
  a = a ^ b;
  b = a ^ b; 
  a = a ^ b;
 
  printf("\nAfter Swapping: a = %d  b = %d\n", a, b);
 
  return 0;
}

The output of the above c program; as follows:

Please Enter the value of a and b :- 56 85
Before Swap: a = 56  b = 85

After Swapping: a = 85  b = 56

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AuthorAdmin

My name is Devendra Dode. I am a full-stack developer, entrepreneur, and owner of Tutsmake.com. I like writing tutorials and tips that can help other developers. I share tutorials of PHP, Python, Javascript, JQuery, Laravel, Livewire, Codeigniter, Node JS, Express JS, Vue JS, Angular JS, React Js, MySQL, MongoDB, REST APIs, Windows, Xampp, Linux, Ubuntu, Amazon AWS, Composer, SEO, WordPress, SSL and Bootstrap from a starting stage. As well as demo example.

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