**Swapping **two numbers (**using three variables**)

### Program:

#include<stdio.h> #include<conio.h> void main() { int a, b, c ; clrscr() ; printf("Enter two numbers : ") ; scanf("%d %d", &a, &b) ; printf("\nBefore swapping : \n\n") ; printf("a = %d \t b = %d", a, b) ; c = a ; a = b ; b = c ; printf("\n\nAfter swapping : \n\n") ; printf("a = %d \t b = %d", a, b) ; getch(); }

### OutPut:

```
Enter two numbers : 10 20
Before swapping :
a = 10 b = 20
After swapping :
a = 20 b = 10
```

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### Comments

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