Thread: Confusion in pointers in C

Hi all,
Here is another question for me that i could not find any answer. Try to create an dynamic array in C just using vscode in Ubuntu. Try to describe my issue in code sample below. When i run the code output is: [hello0][(null)]
When i use line 10 in code sample taking this error message "Exception has occurred Segmentation fault. Could you please tell me what i am doing wrong. I would be much appreciated.

Code:

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
int foo(char ***BufferArray,char *item,int idx);
int main(){
    char **ptr=malloc(sizeof(char*)*3);
    char a[]="hello0";
    char b[]="hello1";
    foo(&ptr,a,0);
    //foo(&ptr,b,1);//Exception has occurred. Segmentation fault  - line 10
    printf("[%s]",*(ptr+0));
    printf("[%s]",*(ptr+1));
    getchar();
    return(0);
}

int foo(char ***BufferArray,char *item,int idx){
    int n;
    n=1;
    *(*(BufferArray+idx))=malloc(sizeof(char)*strlen(item));
    strcpy(*(*(BufferArray+idx)),item);
    return(0);
}