Function getCommaSeparatedValues

Function getCommaSeparatedValues: The function/method getCommaSeparatedValues accepts two arguments SIZE and arr. SIZE represents the size of the integer array arr.

The function/method getCommaSeparatedValues must return a string representing the comma separated integer values in the given array.

Your task is to complete the code in the function getCommaSeparatedValues so that it passes all the test cases.

Note: The size of the given array is always valid so that the length of the comma separated values do not exceed 100.

IMPORTANT: Do not write the main() function as it is already defined.

Example Input/Output 1:
Input:
5
12 854 7 6654 22

Output:
CSV: 12,854,7,6654,22

Explanation:
There are 5 integer values in the given array.
The comma separated values for the array is given below.
12,854,7,6654,22

Example Input/Output 2:
Input:
2
12 4987

Output:
CSV: 12,4987

#include <stdio.h>
#include <stdlib.h>
char* getCommaSeparatedValues(int SIZE, int arr[])
 {
     char str = malloc(1001sizeof(char));
     for(int index=0; index<SIZE; index++){
         char num[101];
         sprintf(num,"%d", arr[index]);
         strcat(str,num);
         if(index<SIZE-1){
             strcat(str,",");
         }
     }
     return str;
 }
 int main()
 {
     int N;
     scanf("%d", &N);
     int arr[N];
     for(int index = 0; index < N; index++)
     {
         scanf("%d", &arr[index]);
     }
     char *ptr = getCommaSeparatedValues(N, arr);
     printf("CSV: %s", ptr);
     return 0;
 }