1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
|
/*
* makeimage.cpp:
*
* Make an image with a given number of sectors.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <err.h>
const char *progname = "makeimage";
void usage()
{
errx(1,"usage: %s file blockcount\n",progname);
}
int main(int argc,char **argv)
{
if(argc!=3) usage();
int count = atoi(argv[2]);
char buf[512];
FILE *out = fopen(argv[1],"wb");
if(!out) err(1,"fopen(%s)",argv[1]);
memset(buf,' ',sizeof(buf));
buf[511] = '\000';
for(int i=0;i<count;i++){
sprintf(buf,"Block %d\n",i);
fwrite(buf,sizeof(buf),1,out);
}
fclose(out);
}
|