I'm wondering how it is possible to read from a file looking like this:0001 1
0002 0
0003 0
0004 1The program should read the file and understand 0001 as an integer and 1 or
0 as an integer. The two numbers should be saved in variables such as a, b.Can anyone help?
T. Kristoffersen <[EMAIL PROTECTED]>
Yes, you can first open the file for reading via "fopen()" and then
read the data into separate integer variables using "fscanf()" from the
file stream. For example, the following example should set you in the right
direction:
/* readvals.c */
#include <stdio.h>
#include <stdlib.h>
int main()
{
FILE fd;
int a, b;
if ( !(fd = fopen( "numbers.dat", "r")) ) {
fprintf( stderr, "file error...\b");
exit(1);
}
do {
fscanf( fd, "%d" "%d", &a, &b);
printf("a = 000%d, b = %d \n", a, b);
/* if you want to see the data displayed to stdout */
} while ( feof( fd ) == 0);
exit(0);
}
You could also write fscanf() without the 2 sets of quotation marks as:
fscanf( fd, "%d %d", &a, &b);
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