I am trying to read .dat files into 2D array, I tried successfully read same files into 1D arrays such that each line for each array. However, with the code below for 2D array a message box pop up stating " Unhandled exception at 0x00B67361 in ConsoleApplication11.exe: 0xC0000005: Access violation reading location 0x00000000." and does not finish the execution". What's the reason behind the unhandled exception? I use VS 2012 express edition.
do {
char * s = find_data.cFileName;
ifstream fin;
fin.open(s); // open a file
if (!fin.good())
return 1; // exit if file not found
// read each line of the file
while (!fin.eof())
{
// read an entire line into memory
char buf[MAX_CHARS_PER_LINE];
int n = 0;
int s = 0;
int m = 0;
// array to store memory addresses of the tokens in buf
const char* token[MAX_TOKENS_PER_LINE][MAX_TOKENS_PER_LINE] = {}; // initialize to 0
for (m = 1; m < MAX_TOKENS_PER_LINE; m++)
{
fin.getline(buf, MAX_CHARS_PER_LINE);
// parse the line into blank-delimited tokens
// a for-loop index
//char* next_token[MAX_TOKENS_PER_LINE] = {}; // initialize to 0
char *next_token;
// parse the line
token[0][0] = strtok_s(buf, DELIMITER, &next_token); // first token
//token[0] = strtok(buf, DELIMITER); // first token
if (token[0][0]) // zero if line is blank
{
for (n = 1; n < MAX_TOKENS_PER_LINE; n++)
{
token[m][n] = strtok_s(0, DELIMITER, &next_token); // subsequent tokens
//token[n] = strtok(0, DELIMITER); // subsequent tokens
if (!token[m][n]) break; // no more tokens
}
}
}
// process (print) the tokens
for (int i = 0; i < n; i++) // n = #of tokens
for (int j = 0; j < m; j++)
{
cout << "Token[" << i << "," << j << "] = " << token[i][j] << endl;
cout << endl;
}
}
// Your code here
} while( FindNextFile( h, & find_data ) );
FindClose( h );