In this programming tutorial, you will be able to learn how to swap two numbers. There are 4 methods explained.
In order to understand the programming examples, you should have some knowledge of the following C-Programming concepts:
- C Operator
- C Input-output operations
- C Data-type
Swap Two Numbers Using Temporary Variable
#include<stdio.h>
int main(int argc, char const *argv[])
{
int number1,number2,temp;
printf("\nSwapping of two numbers in c\nEnter two numbers \n");
scanf("%d%d",&number1,&number2);
printf("Number 1: %d\nNumber 2: %d",number1,number2);
//swapping
temp=number1;
number1=number2;
number2=temp;
printf("\nAfter swapping");
printf("\nNumber 1: %d\nNumber 2: %d\n",number1,number2);
return 0;
}
C Program to swap two numbers
In the above programming example, the user is asked to enter 2 numbers. The numbers are stored in number1 and number2.
By using a temporary variable numbers entered by the user are swapped. i.e.
temp=number1;
number1=number2;
number2=temp;
After swapping two numbers number1 and number2 are printed onto the console.
Swap Two Numbers Without Third Variable by Addition and Subtraction
#include<stdio.h>
int main(int argc, char const *argv[])
{
int number1,number2;
printf("\nSwapping of two numbers in c\nEnter two numbers \n");
scanf("%d%d",&number1,&number2);
printf("Number 1: %d\nNumber 2: %d",number1,number2);
//swapping
number1=number1+number2;
number2=number1-number2;
number1=number1-number2;
printf("\nAfter swapping");
printf("\nNumber 1: %d\nNumber 2: %d\n",number1,number2);
return 0;
}
In the above programming example, the user is asked to enter 2 numbers. The numbers are stored in number1 and number2.
By using the addition and subtraction operator the numbers entered by the user are swapped. i.e.
number1=number1+number2;
number2=number1-number2;
number1=number1-number2;
After swapping two numbers number1 and number2 are printed onto the console.
Swap Two Numbers without Third Variable by Multiplication and Division
#include<stdio.h>
int main(int argc, char const *argv[])
{
int number1,number2;
printf("\nSwapping of two numbers in c\nEnter two numbers \n");
scanf("%d%d",&number1,&number2);
printf("Number 1: %d\nNumber 2: %d",number1,number2);
//swapping
number1=number1*number2;
number2=number1/number2;
number1=number1/number2;
printf("\nAfter swapping");
printf("\nNumber 1: %d\nNumber 2: %d\n",number1,number2);
return 0;
}
In the above programming example, the user is asked to enter 2 numbers. The numbers are stored in number1 and number2.
By using a multiplication and division operator the numbers entered by the user are swapped. i.e.
number1=number1*number2;
number2=number1/number2;
number1=number1/number2;
After swapping two numbers number1 and number2 are printed onto the console.
Swap Two Numbers without Third Variable by Xor Operation
#include<stdio.h>
int main(int argc, char const *argv[])
{
int number1,number2;
printf("\nSwapping of two numbers in c\nEnter two numbers \n");
scanf("%d%d",&number1,&number2);
printf("Number 1: %d\nNumber 2: %d",number1,number2);
//swapping
number1=number1^number2;
number2=number1^number2;
number1=number1^number2;
printf("\nAfter swapping");
printf("\nNumber 1: %d\nNumber 2: %d\n",number1,number2);
return 0;
}
In the above programming example, the user is asked to enter 2 numbers. The numbers are stored in number1 and number2.
By using a xor operator the numbers entered by the user are swapped. i.e.
number1=number1^number2;
number2=number1^number2;
number1=number1^number2;
After swapping two numbers number1 and number2 are printed onto the console.