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First take 2's complement of -3 which will be as: 3 = 0000 0011 // binary value of 3 = 1111 1100 // take 1's complement i.e invert 0's & 1's 2's complement = 1111 1101 // add 1

We have got result for -3. Now operation for ~ (1's complement is pending). We know in 1's complement 0's will replaced by 1's & 1's will be replaced by 0's as we did above in second step.

Therefore 1's complement of 1111 1101 will be = 0000 0010 Result = 2

## 34 comments:

#define SWAP(x,y) x^=y^=x^=y

would serve

hi TRINATH SOMAROUTHU

Thank you for posting another solution

#define swap(x,y) x^=y^=x^=y

void main()

{

int a=10,b=20;

swap(a,b);

clrscr();

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

getch();

}

output: 20 10

void main()

{

int a,b,c;

clrscr();

printf("\n Enter two no ");

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

printf("\n Before Swaping value of a and b %d %d",a,b);

c=a;

a=b;

b=c;

printf("\n After Swaping value of a and b %d %d",a,b);

getch();

}

THANKS ,THANKS A LOT

good job..

please solve the problem

int a=~-3;

actually i do,not understand about ~ operator that how exactly it works .please solve step by step

process 4 is not working

error is 'wrong type argument to bit-complement' in float value

can anybody explain in detail how a=a+b-(b=a); will work out for swapping

its using third var...

Here is couple of more way to swap two numbers without using temp variable in Java

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a=a+b

a=a-b

b=a-b

thank u very much. this is the best solution without using third variable. simple and short

u r most welcome

a=a+b-(b=a)

now since value of a will be assigned to b

so equation will be

a=a+b-(a)

a=b

read the question first. we don't have to use third variable.

HI can u please help me to solve the following

Swap the values in 2 variBles using a third variAble?? Plzzzzz rply its urgent

Process 1 & 5 are approx same.

First take 2's complement of -3 which will be as:

3

= 0000 0011 // binary value of 3

= 1111 1100 // take 1's complement i.e invert 0's & 1's

2's complement = 1111 1101 // add 1

We have got result for -3. Now operation for ~ (1's complement is pending). We know in 1's complement 0's will replaced by 1's & 1's will be replaced by 0's as we did above in second step.

Therefore 1's complement of 1111 1101 will be =

0000 0010

Result = 2

Hi trinath your this program do my help & made my image in class is a intelligenc boy so thenku very much

I have got another simple solution for this.

A=A*B

B=A/B

A=A/B

Swaping done.

@Ashok Natarajan this is also correct when given both values some numbers.. if your give A=0,B=4 that time floating exception will happen..

the right order is a=a+b,b=a-b,a=a-b

Swapping of two numbers can be done in 5 methods u can see in following url...

www.programmerschat.blogspot.in

yupp...its correct order..(y)

one more way

#include

#include

int main( )

{

static int a=2,b=5;

a=a*b;

b=a/b;

a=a/b;

printf(" a =%d\t b=%d",a,b);

}

void main()

{

int a,b;

clrscr();

printf("\n Enter two no :");

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

printf("\n Before Swaping value of a and b %d %d",a,b);

b=a+b-(a=b);

printf("\n After Swaping value of a and b %d %d",a,b);

getch();

}

process 4 is not working. I things it's

b= b - ~a - 1;

a= a + ~b +1;

what u say?

if do not use third variable then

How to swap 2 variable using only assignment operator and no other operator in C

plz help me

1 + X +( X2 / !2 )+ ( X3 / !3 ) + ( X4 / !4 )

plz help me

swap two numbers without using third variable

Nice article . There is good coding example collection visit

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