...
pFileIn = fopen(inFilename.c_str(), "r");
for(int i = 0; i < 10; i++)
{
fread(&tile, 4, 1, pFileIn);
printf("0x%08X\n", tile);
}
...
Quick file input question...
Author
Ok, i have a file that looks like this:
"0x70,0x70,0x70,0x01,0x03,0x00,0x20,0x04,0x04,0x00" .....etc.
This is how i am reading it in:
However, it''s not getting the correct numbers when I read them in. I read in 4 bytes because it takes four characters per number. I am probably making a simple mistake. Could someone correct me? Thanks!
fread() doesn''t take an int* as its first argument. Its job is to read data, not to convert it to an integer. I suggest you use fscanf instead.
Don''t listen to me. I''ve had too much coffee.
Don''t listen to me. I''ve had too much coffee.
Since you are only loading single int''s one by one, Why not just do this:
--------------
To write:
--------------
int data[5] = { 15, 16, 13, 14, 15 };
FILE *file = NULL;
file = fopen("c:\\windows\\desktop\\test.dat", "wb");
fwrite(data, sizeof(int), 5, file);
fclose(file);
-------------
To read:
-------------
FILE *file = NULL;
file = fopen("c:\\windows\\desktop\\test.dat", "rb");
int data[5];
for (int i = 0; i < 5; i++)
{
fread(&data, sizeof(int), 1, file);
printf("%d\n", data);<br>}<br>fclose(file);<br><br><br>(sorry but I really hate the ugly code format they have on this board)<br> </i>
--------------
To write:
--------------
int data[5] = { 15, 16, 13, 14, 15 };
FILE *file = NULL;
file = fopen("c:\\windows\\desktop\\test.dat", "wb");
fwrite(data, sizeof(int), 5, file);
fclose(file);
-------------
To read:
-------------
FILE *file = NULL;
file = fopen("c:\\windows\\desktop\\test.dat", "rb");
int data[5];
for (int i = 0; i < 5; i++)
{
fread(&data, sizeof(int), 1, file);
printf("%d\n", data);<br>}<br>fclose(file);<br><br><br>(sorry but I really hate the ugly code format they have on this board)<br> </i>
quote:Original post by RegularKid
Ok, i have a file that looks like this:
"0x70,0x70,0x70,0x01,0x03,0x00,0x20,0x04,0x04,0x00" .....etc.
Is the file actually comma delimited? If so, you''re going to need to account for that. Also, is that a hex dump of the file, or does the file actually contain those characters (open it in Notepad, for example, and see what you get)?
If that was a hex dump:
char x;int data;std::vector< int > vdata; // for unknown number of elementsstd::ifstream fin( filename.c_str() ); if( fin.fail() ) return -1; // or false, or whatever''s your preferencewhile( !fin.eof() ){ fin >> data; // if the file is comma-delimited, uncomment the next line: // fin >> x; vdata.push_back( data );} This topic is closed to new replies.
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