C program to swap two numbers?

Today i am going to tell you "How to swap two number with or without third varaible in C language?"

Program To Swap Two Numbers Using Third Variable

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

#include <stdio.h> int main() {       double a, b, c;         printf("Enter first number: ");       scanf("%d", &a);         printf("Enter second number: ");       scanf("%d",&b);         c = a;              a = b;         b = c;         printf("\nAfter swapping, First Number = %.2d\n", a);       printf("After swapping, Second Number = %.2d", b);         return 0; }

Output:

Enter first number: 15

Enter second number: 30

After swapping, First Number = 30

After swapping, Second Number = 15

Program To Swap Two Numbers Using Third Variable

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

#include <stdio.h> int main() {     double a, b;       printf("Enter first number: ");     scanf("%d", &a);       printf("Enter second number: ");     scanf("%d",&b);       // Swapping process       a= a - b;     b= a + b;     a= b - a;       printf("\nAfter swapping, First Number = %.2lf\n", a);     printf("After swapping, Second Number = %.2lf", b);       return 0; }

Output:

Enter first number: 5
Enter second number: 3

After swapping, First Number = 3
After swapping, Second Number = 5

Hope you enjoyed the tutorial.


Thanks.