Value will be added specific index in C

program.c

/*
* You will be given an positive integer N and after that an integer array of size N. 
* Then you will be given Q which refers to queries. For each query you will be given i and v where i refers to the index and v to value. 
* You need to add the value to that index. After all of the queries print the values
*/

#include <stdio.h>

int main() {
    // Write C code here
    int i, n, m;
    int value;
    printf("Number of array element: ");
    scanf("%d", &n);
    
    int arr[n];
    
    for(i=0; i<n; i++) {
        scanf("%d", &arr[i]);
    }
    
    for(i=0; i<n; i++) {
        printf("%d ", arr[i]);
    }
    printf("\ntake an input\n");
    
    scanf("%d", &m);
    
    int arr2[m];
    
    for(i=0; i<m; i++) {
        scanf("%d %d", &arr2[i], &value);
        arr[arr2[i]] += value;
    }
    printf("Result is: ");
    for(i=0; i<n; i++) {
       printf("%d ", arr[i]);
    }

    return 0;
}