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How do you write a program in C to swap two variables without using the third one?
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main() { int a,b; clrscr(); printf("enter the value for a & b\n"); scanf("%d%d",&a,&b); printf("value of a is %d & b is %d before swapping\n",a,b); a=a+b; b=a-b; a=a-b; printf("value of a is %d & b is %d after swapping\n",a,b); getch(); }

Answer

Program for swapping two numbers without using third variable.This programme will work for only integer not for floating.For both the above code is correct one.

fun_swap( int a,int b){ a = a^b; b =a^b; a =a^b; printf( "%d %d", a,b); }


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