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compareFiles.c
60 lines | 1.2 KiB | text/x-c | CLexer
/* $Id: compareFiles.c 3304 2011-01-17 15:25:59Z brideout $ */
/*
modification history
--------------------
00a,21Feb00 original
*/
/*
USAGE: compareFiles
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
typedef short Int16;
int
main (argc, argv)
int argc;
char *argv[];
{
FILE *f1p, *f2p;
int nwords=0, ndiff=0, maxlines=800, all=0;
Int16 w1=0, w2=0;
if (argc == 3) {
f1p = fopen(argv[1], "r");
f2p = fopen(argv[2], "r");
} else {
(void) printf("Usage: compareFiles file1 file2\n");
return(1);
}
nwords = 0;
ndiff = 0;
for (;;) {
if (fread(&w1, (size_t) 2, (size_t) 1, f1p) != 1) break;
if (fread(&w2, (size_t) 2, (size_t) 1, f2p) != 1) break;
nwords++;
if (w1 != w2 || all) {
if (ndiff == 1 && !all)
(void) printf("***> The files are different <***\n");
ndiff++;
(void) printf("%6d %6d %6d\n", nwords-1, w1, w2);
if (ndiff >= maxlines) return(0);
}
}
if (nwords > 0) {
(void) printf(" OK - %d words compared\n", nwords);
} else {
(void) printf(" ***> ERROR - %d words compared <***\n", nwords);
return(0);
}
(void) fclose(f1p);
(void) fclose(f2p);
return(0);
}