fgetc,getc causes the program to crash when reading from text file

Question

Whats wrong? I'm pretty sure my syntax is correct since it has no warnings. Plus it won't go past getc(document); I tried fgetc(document); same result. What am I not getting here? (I used printf("$"); to see where it crashes)

char temp[51];
int cntr = 0,listcntr = 0,buffer;
FILE *document;
contact list[MAXCONTACTS];
document = fopen("addressbook.txt","r");
do
{
    for(cntr = 0;cntr < 51; cntr++)
        temp[cntr] = '\0';
    cntr = 0;
    do
    {

        buffer = getc(document);
         printf("$");
        if(buffer != '\t')
            temp[cntr] = buffer;
        ++cntr; 
    }while(buffer != '\t'&& buffer != EOF);
list[listcntr].name = temp;

Answer 1

OK I modified your code a little and added a couple of checks, maybe it will be enough.

char temp[51];
int listcntr = 0,buffer;
contact list[MAXCONTACTS];
FILE *document = fopen("addressbook.txt","r");

if (NULL == document){
    //exit here
}

for(int i = 0;i < 51; i++){
    temp[i] = '\0';
}

int cntr = 0;
for (int cntr=0; cntr < 51 && !feof(document); cntr++){
    buffer = getc(document);
    if (buffer == '\t'){
        break;
    }
    temp[cntr] = buffer;
}

if(listcntr < MAXCONTACTS){
    // you should probably copy temp here
    list[listcntr].name = temp;
}