meowsum.git

diff --git a/meowsum.c b/meowsum.c
index 991c5153faa563fce472563047c046bd919bae60..20b12ef8329880ac886fd637423193969790e6ed 100644
--- a/meowsum.c
+++ b/meowsum.c
@@ -83,8 +83,8 @@   } else {
     fd = open(path, 0);
   }
   if (fd == -1) {
-    perror("error: ");
-    printf("error opening file %s\n", path);
+    perror("error");
+    fprintf(stderr, "error opening file %s\n", path);
     return NULL;
   }
 
@@ -92,8 +92,8 @@   *size = 0;
 
   hash = malloc(sizeof(meow_u128));
   if (hash == NULL) {
-    perror("error: ");
-    printf("error mallocing hash for %s\n", path);
+    perror("error");
+    fprintf(stderr, "error mallocing hash for %s\n", path);
     return NULL;
   }
 
@@ -101,8 +101,8 @@   MeowBegin(&state, MeowDefaultSeed);
   while (true) {
     read_bytes = read(fd, buffer, 8192);
     if (read_bytes == -1) {
-      perror("error: ");
-      printf("error reading file %s\n", path);
+      perror("error");
+      fprintf(stderr, "error reading file %s\n", path);
       close(fd);
       return NULL;
     }
@@ -149,12 +149,12 @@
   for (int i = start; i < argc; ++i) {
     hash = calculate_checksum(argv[i], &size);
     if (hash == NULL) {
-      printf("error while calculating %s\n", argv[i]);
+      fprintf(stderr, "error while calculating %s\n", argv[i]);
       return false;
     }
     hex_hash = format_sum(*hash, hash_size);
     if (hex_hash == NULL) {
-      printf("error while formating hex hash for %s\n", argv[i]);
+      fprintf(stderr, "error while formating hex hash for %s\n", argv[i]);
       free(hash);
       return false;
     }
@@ -194,7 +194,7 @@         if (feof(file)) {
           break;
         } else {
           perror("error");
-          printf("while reading line in %s\n", argv[i]);
+          fprintf(stderr, "while reading line in %s\n", argv[i]);
           return false;
         }
       }
@@ -211,7 +211,7 @@       } else {
         // todo missing
         hash = calculate_checksum(path, &size);
         if (hash == NULL) {
-          printf("error while calculating %s\n", path);
+          fprintf(stderr, "error while calculating %s\n", path);
           free(hash);
           free(path);
           free(line);
@@ -219,7 +219,7 @@           continue;
         }
         hex_hash = format_sum(*hash, hash_size);
         if (hex_hash == NULL) {
-          printf("error while formating hex hash for %s\n", path);
+          fprintf(stderr, "error while formating hex hash for %s\n", path);
           free(hex_hash);
           free(hash);
           free(path);