Hello guys could you please help me write a piece of code that will read a file char by char and store it into the 2Dimensional array pointer using "File Pointer"?
Here's my file:
0.2.0 9.4.7 0.0.0
0.5.0 0.0.6 0.4.7
0.7.0 0.0.0 1.0.6
7.4.0 3.1.0 0.0.5
0.9.0 8.0.4 0.6.0
5.0.8 0.6.0 0.9.3
0.0.4 0.0.0 0.7.0
0.8.0 2.0.0 0.3.0
0.0.0 4.3.5 0.1.0
post your code that you have worked on so far
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Originally Posted by rogster001
Code:FILE *file; int c; char **file_buffer; file_buffer = (char**)malloc(9*sizeof(char)); for(int x =0;x<9;x++){ file_buffer[x] = (char*)malloc(1*sizeof(char)); } file = fopen("C:\\Users\\S2xC\\Documents\\sudoku.txt","r"); int x=0; int y=0; if(file!=NULL){ c = fgetc(file); while(c>=0){ file_buffer[x][y] = (char)c; c = fgetc(file); y++; if(c=='\n'){ x++; y=0; } } }
Last edited by 'Serj Codito; 09-08-2012 at 03:55 AM.
> file_buffer = (char**)malloc(9*sizeof(char));
A couple of points.
1. Don't cast the result of malloc -> FAQ
2. You got the size wrong, it should be sizeof(char*)
Generally, if you write
file_buffer = malloc(9*sizeof(*filebuffer));
you're always going to be right.
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
FYI, this is C, not C++. Next time, please post it in the C forum.
