question

I wrote this small program to read a 512 block of binary data and write
the same to a file. My code compiled well. The only thing is when I ran the
compilers binary instead of a data file of 512 bytes I got one of 2048
bytes.

#include <stdio.h>

main(){
int buf[512];
FILE *fp;
fp=fopen("r.dsk","rb");
if (fp==NULL) {printf("Error"); exit(0);}
fread(buf,sizeof(int),512,fp);
fclose(fp);
fp=fopen("dat","wb");
if (fp==NULL) {printf("Error");}
fwrite(buf,sizeof(int),512,fp);
fclose(fp);}

Is it the code or some overhead from the compiler or linker?

Bill
The unix dd command copies exactly 512 bytes of I asked it too.


.

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