Swap two numbers using function.

#include<stdio.h>
void swapping(int *ptr1, int *ptr2)
{
    int temp;
    temp = *ptr1;
    *ptr1 = *ptr2;
    *ptr2 = temp;
}
int main()
{
    int num1, num2;
    scanf("%d %d", &num1, &num2);
    swapping(&num1, &num2);
    printf("%d %d", num1, num2);

}