hi, i currently doing a program that can read from output file that i had created.Here is my problem : how do i read in randomly into struct
by the way i am using fread because i wanna read a binary file..and i don't know how to continue it..can i hav any tips..Thanks
Below are only part of the code..
Code:
typedef struct abc {
char a[10];
char b[20];
char c[30];
} Data;
etc...
Data *entry;
time_t t1;
/* let say i got a 100 data in the file and i wanna read only 10 randomly of it.. */
for (j=0; j<10 ; j++)
{
srand48((long) tl); /* tl is a some time variable cos i need to calculate the timing too */
fseek(infile, 0, SEEK_SET);
random_number = lrand48()%1500000;
if (fread(entry, sizeof(Data), 1, infile)) {
/* i dunno what to do in here */
/* issit correct if i do like this */
fread(entry->a, sizeof(entry->a), 1, infile);
.......
}
printf("%s,%s,%s\n",entry->a, entry->b, entry->c);
fseek(infile, 3 , SEEK_CUR);
}
