Trouble storing file input in array

difficult.name · 10-10-2004, 09:57 PM

I'm using the following to read a 3 line by 3 column file and storing it into the array. However, when I try to print out the array contents, only the first line is correct. The rest is either gibberish smiley faces or sometimes numbers.

Code:

   char read, array[3][3];
   int i=0, j=0;

   FILE *test = fopen("test.txt","r");
   while (!feof(test))
   {
      fscanf(test, "%c", &read);
      if (read=='\n')
         break;
      else
         array[i][j]=read;
      if (i<3 && j<3)
         j++;
      else if (i<3 && j==3)
         i++;
   }

PrimeTime00 · 10-10-2004, 11:54 PM

Quote:

if (read=='\n')
break;

This code will break out of your read loop after the first line is read in. This will cause only 1 line to be read. The data inside the other parts of your array are junk characters because they weren't initialized.

for example you might have the file be something like:

abc
123
xyz

you code will read in abc and then detect a newline('\n') and break.

You may try:

Code:

while (!feof(test))
{
   fscanf(test, "%c", &read);
   if (read=='\n')
   {
      j = 0;  //reset j
      i++;   //increase to next line
      continue;  //go back to top of loop
   }
   j++;
}

hope this helps,
Ryan

10-10-2004, 09:57 PM	#1
difficult.name Registered User Join Date: Sep 2004 Posts: 16	Trouble storing file input in array I'm using the following to read a 3 line by 3 column file and storing it into the array. However, when I try to print out the array contents, only the first line is correct. The rest is either gibberish smiley faces or sometimes numbers. Code: char read, array[3][3]; int i=0, j=0; FILE *test = fopen("test.txt","r"); while (!feof(test)) { fscanf(test, "%c", &read); if (read=='\n') break; else array[i][j]=read; if (i<3 && j<3) j++; else if (i<3 && j==3) i++; }
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