1.3: fix dzagalskii#4: magic word

Author: zvezdochiot

CHANGELOG

@@ -0,0 +1,19 @@
+1.3: zvezdochiot <mykaralw@yandex.ru>
+
+    * magic word
+
+1.2: zvezdochiot <mykaralw@yandex.ru>
+
+    * added warnings
+    * optimize io, time gain 50-70%
+
+1.1: zvezdochiot <mykaralw@yandex.ru>
+
+    * simplify invert
+    * simplify hammingdec
+    * strip code
+    * bit operations, remove math, time gain 50-70%
+
+1.0: Dmitrii Zagalskij
+
+    * init version

Makefile

@@ -1,14 +1,15 @@
 CC            = gcc
 CFLAGS        = -Wall -std=c99
 LDFLAGS       = -s
+SRCP          = src
 PROGS         = hammingenc hammingdec
 
 all: $(PROGS)
 
-hammingenc: hammingenc.c
+hammingenc: $(SRCP)/hammingenc.c
 	$(CC) $(CFLAGS) $^ -o $@ $(LDFLAGS)
 
-hammingdec: hammingdec.c
+hammingdec: $(SRCP)/hammingdec.c
 	$(CC) $(CFLAGS) $^ -o $@ $(LDFLAGS)
 
 clean: $(PROGS)

hammingdec.c src/hammingdec.chammingdec.c renamed to src/hammingdec.c

@@ -75,6 +75,13 @@ int main(int argc, char *argv[])
     printf("coded: %s\n", argv[1]);
     printf("file: %s\n", argv[2]);
     int c = 8;
+    char mc[7] = {"\0"};
+    fread(mc, 6, 1, f);
+    if (strcmp(mc, "HECC8") && strcmp(mc, "HECC12") && 
+        strcmp(mc, "HECC16") && strcmp(mc, "HECC32") &&
+        strcmp(mc, "HECC64"))
+        fprintf(stderr, "WARNIND: Bad MAGIC number: %s\n\n", mc);        
+    sscanf(mc, "HECC%d", &c);
     if (argc > 3) c = atoi(argv[3]);
     printf("decoding length: %d\n\n", c);
     if(c == 8)

hammingenc.c src/hammingenc.chammingenc.c renamed to src/hammingenc.c

@@ -73,6 +73,10 @@ int main(int argc, char *argv[])
     int c = 8;
     if (argc > 3) c = atoi(argv[3]);
     printf("coding length: %d\n\n", c);
+    char mc[2];
+    fwrite("HECC", 4, 1, t);
+    sprintf(mc, "%d", c);
+    fwrite(mc, 2, 1, t);
     if(c == 8)
     {
         int x, kod[12];