Pointer to Pointer

Lab C Advanced 30 points

Read two integers a and b. Make int *p = &a; and int **pp = &p;. Print **pp, then make *pp point to b and print *p, then set **pp = 100 and print a and b.

Input

Two integers.

Output

Three lines.

Example

Input

1 2

Output

1
2
1 100

Sample input available Sample output available

Editor

Hints

*pp is p itself; **pp is what p points to.

Solution explanation

Changing *pp redirects p; changing **pp changes the int p points to.

Show solution

#include <stdio.h>

int main() {
    int a, b;
    scanf("%d %d", &a, &b);
    int *p = &a;
    int **pp = &p;
    printf("%d\n", **pp);
    *pp = &b;
    printf("%d\n", *p);
    **pp = 100;
    printf("%d %d\n", a, b);
    return 0;
}

Output

Answer