Thread: Reading Tab Separted Text files

I am having a problem in reading a text file in which data is written in columnar format seperated by tabs
like
1 10 100
2 15 200

and i am using the following code using fscanf but when it encounters tab it enters a end of line character

#include <stdio.h>

int main()
{
FILE *textfile;
char line[80];
char Templine[80];

clrscr();

if( (textfile=fopen("test.txt", "r")) == NULL )
{
printf ("Error opening text file for reading\n");
exit(0);
}

/*read file contents*/
while( (fscanf(textfile, "\t %s", Templine) != EOF) )
{
if (strchr("\n",Templine) == NULL)
line[0] = strcat(line, Templine);
else
line[0] = "\0";

printf ("%s\n", line);
}


/*close the file*/
fclose(textfile);
getch();
}

Perhaps you should remove the \t from the formatstring. I'm not sure, but aren't tabs in text-files replaced by spaces? In that case you only need %d to read integer values. Personally I would use %d to get the integer values instead of reading the whole line as a string.

I guess something like this should work:

Code:

FILE *textfile;
int a, b, c;

fscanf(textfile, "%d%d%d", &a, &b, &c);

By the way, you forgot to return a return value at the end of main. And I would not use exit(0). But do something like:

Code:

if ((textfile=fopen("test.txt", "r")) == NULL) 
{ 
    printf ("Error opening text file for reading\n"); 
    return_value = 0; 
}
else
{
    /* file is opened for reading */
    
    ....

    return_value = 1;
}

return return_value;