Resize Array

Medium Dynamic Memory Allocation

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Problem Statement

Write a C program to resize a dynamically allocated array using `realloc`, adding new elements and printing the updated array.

Input Format

First line: initial size n1. Second line: n1 elements. Third line: new size n2. Fourth line: n2 - n1 new elements.

Output Format

Print the resized array elements separated by spaces.

Constraints

1 <= n1 < n2 <= 100

Sample Input

Sample Output

1 2 3 4 5

Explanation

Use `realloc` to resize the existing heap memory block, read additional elements into the newly allocated space, and print the entire array.

Starter Code

#include <stdio.h>
#include <stdlib.h>

int main() {
    int n1;
    if (scanf("%d", &n1) == 1) {
        int *arr = (int *)malloc(n1 * sizeof(int));
        for (int i = 0; i < n1; i++) {
            scanf("%d", &arr[i]);
        }
        int n2;
        scanf("%d", &n2);
        // Write your code here to resize array using realloc and read new elements
    }
    return 0;
}

Limits

Time Limit: 1s
Memory Limit: 256MB

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