Pointer to Pointer

Medium Pointer Fundamentals

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Problem Statement

Write a C program to demonstrate pointer-to-pointer (double pointer) usage by modifying or printing a variable’s value through a double pointer.

Input Format

An integer value.

Output Format

Print the value accessed via the double pointer.

Constraints

Standard integer limits

Sample Input

Sample Output

Explanation

Use a pointer to point to a pointer variable (`int **pptr = &ptr`), then dereference twice (`**pptr`) to access the value.

Starter Code

#include <stdio.h>

int main() {
    int num;
    if (scanf("%d", &num) == 1) {
        int *ptr = &num;
        int **pptr = &ptr;
        // Write your code here to print value using double pointer
    }
    return 0;
}

Limits

Time Limit: 1s
Memory Limit: 256MB

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