swap.c

#include <iostream>

void swap(int *x, int *y) {
    int temp = *x;
    printf("the value of temp: %d\n", temp);
    *x = *y;
    *y = temp;
}

void wrong_swap(int x, int y) {
    int temp = x;
    x = y;
    y = temp;
}
  
int main() {
    int i = 10, j = 20;
    printf("Before Swapping\n%d  %d\n", i, j);
    swap(&i, &j);
    printf("After Swapping\n%d  %d\n", i, j);
    
    return 0;

}