c program to swap two numbers with and without using third variable

SWAPPING WITHOUT USING THIRD VARIABLE

PROGRAM:

#include<stdio.h>

int main()

{

int a,b;

printf("Enter two values");

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

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

{

a=a+b;

b=a-b;

a=a-b;

}

printf("After Swap a=%d,b=%d",a,b);

return 0;

}

OUTPUT:

Enter two values 30 5

Before Swap a=30, b=5

After Swap a=5,b=30

SWAPPING WITH USING THIRD VARIABLE

PROGRAM:

#include<stdio.h>

int main()

{

int a,b,c;

printf("Enter two values");

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

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

{

c=a;

a=b;

b=c;

}

printf("After Swap a=%d,b=%d",a,b);

return 0;

}

OUTPUT:

Enter two values 30 5

Before Swap a=30, b=5

After Swap a=5,b=30