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#include <stdio.h>
#include <stdlib.h>
int main
(argc
, argv
)
int argc
;
char **argv
;
{
FILE
*f1
,*f2
;
unsigned char c1
,c2
;
long pos
= 0;
if (argc
!= 3)
{
fprintf(stderr
, "calling convention: %s <file1> <file2>\n", argv
[0]);
return 1;
}
f1
= fopen(argv
[1], "rb");
if (f1
== NULL
)
{
perror(argv
[1]);
exit(2);
}
f2
= fopen(argv
[2], "rb");
if (f2
== NULL
)
{
perror(argv
[2]);
exit(2);
}
while ((!feof(f1
)) && (!feof(f2
)))
{
fread(&c1
, 1, 1, f1
);
fread(&c2
, 1, 1, f2
);
if (c1
!= c2
)
{
fprintf(stderr
,"compare error at position %d\n",pos
);
fclose(f1
);
fclose(f2
);
exit(3);
}
pos
++;
}
if (feof(f1
) != feof(f2
))
{
fprintf(stderr
,"files have different sizes\n");
fclose(f1
);
fclose(f2
);
exit(4);
}
fclose(f1
);
fclose(f2
);
return 0;
}