C program for swapping of two numbers | CTechnotips

Code for swapping in c

#include<stdio.h>

int main(){

    int a,b,temp;

   

    printf("Enter any two integers: ");

    scanf("%d%d",&a,&b);

    printf("Before swapping: a = %d, b=%d",a,b);

    temp = a;

    a = b;

    b = temp;

    printf("\nAfter swapping: a = %d, b=%d",a,b);

    return 0;

}

C program for swapping of two numbers using pointers

#include<stdio.h>

int main(){

    int a,b;

    int *ptra,*ptrb;

    int *temp;

    printf("Enter any two integers: ");

    scanf("%d%d",&a,&b);

    printf("Before swapping: a = %d, b=%d",a,b);

    ptra = &a;

    ptrb = &b;

     temp = ptra;

    *ptra = *ptrb;

    *ptrb = *temp;

    printf("\nAfter swapping: a = %d, b=%d",a,b);

    return 0;

}

Sample output:

Enter any two integers: 5 10

Before swapping: a = 5, b=10

After swapping: a = 10, b=10

Swapping program in c using function

#include<stdio.h>

void swap(int *,int *);

int main(){

    int a,b;

   

    printf("Enter any two integers: ");

    scanf("%d%d",&a,&b);

    printf("Before swapping: a = %d, b=%d",a,b);

    swap(&a,&b);

    printf("\nAfter swapping: a = %d, b=%d",a,b);

    return 0;

}

void swap(int *a,int *b){

    int *temp;

    temp = a;

    *a=*b;

    *b=*temp;

}

Sample output:

Enter any two integers: 3 6

Before swapping: a = 3, b=6

After swapping: a = 6, b=6