#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[])
{
FILE *fp;
if(argc != 3)
{
printf("Usage: SEEK filename byte\n");
exit(1);
}
if((fp = fopen(argv[1], "rb")) == NULL)
{
printf("Cannot open file.\n");
exit(1);
}
if(fseek(fp, atol(argv[2]), SEEK_SET))
{
printf("Seek error.\n");
exit(1);
}
printf("Byte at %1d is %c.\n", atol(argv[2]), getc(fp));
fclose(fp);
return 0;
}