c prog for swapping two numbers?

Question

can u pls write the prog for swapping two numbers??

Answer 1

Pseudocode

=

There are many ways to do that, here are some.

Code snippets:

1)

int x, y; /* are the two numbers */

x = x+y;

y = x - y;

x = x - y;

2)

x = x*y;

y = x/y;

x = x/y;

3)

x = x ^ y;

y = x ^ y ;

x = x ^ y ;



NOTE: These logics have some limitations

Logic 1 has the Overflow problem when we add (x+y).

Logic 2 has the Overflow problem when we multiply ( x*y) and y should not be Zero.

Logic 3 has the same and its not works on the float numbers.

=

#include

#include

void main()

{

int a,b;

printf("\n Enter the 2 numbers");

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

//swaping of 2 numbers without using temp variable

a=a+b;

b=a-b;

a=a-b;

/* or

a=a*b;

b=a/b;

a=a/b;

*/

printf("\n A = %d \n B = %d\n");

getch();

}

Answer 2

Hi..



If You Want To Swap TWO Numbers make use of third variable for temporary store values of both variables which are to be swapped..



void swap()

{



int x,y,temp(temporary variable);



temp=x; //put value of x into temp



x=y; //put value of y into x;



y=temp; //put value of temp which is original value of x to y;



}



yipee...we hav jus swapped two numbers



(We Can Also Accept These Values Of x & y From Users)



e.g.



printf("enter the value for x & y");

scanf("%d %d",&x,&y);



cheer's





Thanx...



ITGuy

Answer 3

include

#include

void main()

{

int x,y,t;

printf("Enter the two nos:");

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

t=x;

x=y;

y=t;

getch();

}





or

without using of third variable



#include

#include

void main()

{

int x,y;

printf("Enter the two nos:");

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

x=x+y;

y=x-y;

x=x-y;

getch();

}



x = x+y;

y = x - y;

x = x - y;

2)

x = x*y;

y = x/y;

x = x/y;

3)

x = x ^ y;

y = x ^ y ;

x = x ^ y ;

Answer 4

program for swapping two nos;

with t



#include

#include

void main()

{

int x,y,t;

printf("Enter the two nos:");

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

t=x;

x=y;

y=t;

getch();

}





or

without t



#include

#include

void main()

{

int x,y;

printf("Enter the two nos:");

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

x=x-y;

y=x+y;

x=y-x;

getch();

}