Answer / vignesh1988i

as for i know their are two different logics for the
swapping techinque.... swapping is a type of techinque used
for interchanging the two varibles in the operating
memory....
1) using only variables
2) using EX-OR operator '^'
first logic only know.
void main()
{
int a,b;
printf("enter the a&b");
scanf("%d%d",&a,&b);
a+=b;
b=a-b;
a-=b;
printf("a=%d\nb=%d",a,b);
getch();
}

Answer / venkatesh sabinkar

as far i know i know two logics they are
first one
void main()
{
int a,b;
printf("eneter any two values");
scanf("%d%d",&a,&b);
a=a+b;
b=a-b;
a=a-b;
printf("a=%d\nb=%d",a,b);
getch():
}
second one
void main()
{
int a,b;
printf("eneter any two values");
scanf("%d%d",&a,&b);
a=a*b;
b=a/b;
a=a/b;
printf("a=%d\nb=%d",a,b);
getch():
}

Answer / kishan gowda

One more method its bit complicated from the people from
the non electronics background......
void main()
{
pf(" a and b ");
sf("%d %d", &a, &b);
a= a^b;
b= b^a;
a= a^b;
pf("Swapped no's are a=%d and b=%d" ,a ,b);
}

Answer / alok bajpai

You can swap two Numbers without using temporary variable
with the help of EX-OR operator;

#include<stdio.h>
#include<conio.h>
void main()
{
int a,b;
clrscr();
printf("Enter the first No.:");
scanf("%d",&a);
printf("Enter the second No.:");
scanf("%d",&b);
a^=b^=a^=b;
printf("%d %d",a,b);
getch();
}

Answer / gana samantula

#include<stdio.h>
#include<conio.h>
void main()
{
int a,b;
clrscr();
printf(" Enter the first No.:");
scanf("%d",&a);
printf(" Enter the second No.:");
scanf("%d",&b);
b=a+b-(a=b);
printf(" the swap of a and b numbers :%d %d",a,b);

getch();
}

Answer / kk

three logic
xor -> a^=b^=a^=b;
addition and subtraction,
multiply and division .......

Answer / chandan doki

void main()
{
int a,b;
printf("eneter any two values for a and b");
scanf("%d%d",&a,&b);
b=a+b;
a=b-a;
b=b-a;
printf("a=%d\nb=%d",a,b);
getch();
}

Answer / tumatij

/*5. Write a C program to swap two integer numbers in various different techniques.
Answer:
*/
#include<stdio.h>
int main()
{
int a,b,temp;
printf("Enter the two numbers:");
scanf("%d%d",&a,&b);
printf("
Values before swapping a=%d b=%d",a,b);
//First logic
temp=a;
a=b;
b=temp;
printf("
Values after swapping a=%d b=%d",a,b);
//2nd logic
a=a+b;
b=a-b;
a=a-b;
printf("
Values after swapping a=%d b=%d",a,b);
//3rd logic
a=a*b;
b=a/b;
a=a/b;
printf("
Values after swapping a=%d b=%d",a,b);
//4th logic
a=(a+b)-(b=a);
printf("
Values after swapping a=%d b=%d",a,b);
//5th logic
a=a^b;
b=a^b;
a=a^b;
printf("
Values after swapping a=%d b=%d",a,b);
//6th logic
a^=b^=a^=b;
printf("
Values after swapping a=%d b=%d",a,b);
//7th logic
a=a-b;
b=a+b;
a=b-a;
printf("
Values after swapping a=%d b=%d",a,b);
}

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