Write a C program to swap 2 numbers using 3rd variable?

Answer 1

#include<stdio.h>

main()

{

int a,b;

printf("enter the value for a and b\n");

scanf("%d %d",&a,&b);

display(a,b);

}

display(int x,int y)

{

int temp;

temp=x;

x=y;

y=temp;

printf("%d %d",x,y);

}

Answer 2

void swap(int *a, int *b)

{

// *a ^= *b means *a = *a XOR *b

*a ^= *b;

*b ^= *a;

*a ^= *b;

}

An example: a = 1101, b = 1010 a ^= b ---> a = 0111 b ^= a ---> b = 1101 a ^= b ---> a = 1010

Answer 3

#include <stdio.h>

#include <conio.h>

void swap(int *d1 , int *d2)

{

int temp;

temp=*d1;

*d1=*d2;

*d2=temp;

}

void main()

{

int a,b;

clrscr();

printf("Enter number a:");

scanf("%d", &a);

printf("\nEnter number b:");

scanf("%d", &b);

swap(&a,&b);

printf("\na contain %d",a);

printf("\nb contain %d",b);

getch();

}

Answer 4

#include

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

int temp = *a;

*a = *b;

*b = temp;

}

int main(){

int a,b;

printf("Enter the two numbers : ");

scanf("%d%d", &a, &b);

swap(&a, &b);

printf("After swapping; a=%d , b=%d\n", a, b);

return 0;

}

Answer 5

void main()

{

int a,b,c;

printf("\n enter variables");

scanf("\%d,%d",&a&b);

c=a;

a=b;

b=c;

printf("%d%d",a,b);

}

Answer 6

Here's a function that'll swap any two integers:

void swap(int & x, int & y)

{

if( x y ) return;

x ^= y ^= x ^= y;

}

Answer 7

Why don't you write it and post it here and someone will tell you if it is good or offer good advice.