Need help with file i/o in c

Question

I have a text file like this

7311

6234

6534

3465

and an array in my program ' map [4] [4];

i was wondering how you could read the right integers into the right spaces in the array... if you get what i mean.

Or if anyone knows how to read a particular integer at a particular space in the text file into the right space in the array.

Thanks

Answer 1

int y=0

int z=0

while (y < 5){

   while(z < 5){

      read next integer into map[y][z]

z++

   } //end inner z loop

y++

} //end outer y loop

Sorry, the yahoo messes up the spacing. But what you're doing is a nested loop. The outside loop is for the first [4], the inside loop is for the second [4]. So the first time around, its going to read [0][0], then [0][1], then [0][2], etc.

Also, if your array has its bounds set as [4][4], then i'm assuming we know how many integers are in the input file.

Answer 2

FILE fPtr;

int a ,b;

char number;

a = b = 0;

fPtr = fopen("numbers.txt", "r");

if (fPtr == 0)

return;

while (!feof())

{

fread(number, 1, 1, fPtr); //I think the parameters are right

if (number >= '0' && number <= '9') //assuming ascii characters

{

map[a][b] = number;

b++;

}

else

{

a++;

b = 0;

}

}

fclose(fPtr);