C Program to swap two numbers using a third variable or temp variable

#include <stdio.h>
int main()
{
    int a, b,tmp;
    
    printf("Enter Value of a = ");
    scanf("%d", &a);
    printf("Enter Value of b = ");
    scanf("%d", &b);
    temp = a;
    a = b;
    b = temp;
    printf("\nAfter Swapping: a = %d, b = %d", a, b);
    return 0;
}

Output:

Enter Value of a = 10
Enter Value of b = 20

After Swapping: a = 20, b = 10