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
Let’s use the following program to swap two numbers in c using third variable, pointer, function, OR Operator, and call by reference:
- 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
