1 files changed, 10 insertions, 3 deletions
diff --git a/count_nucleobases.c b/count_nucleobases.c
index fbf4ce2..1b432da 100755
--- a/count_nucleobases.c
+++ b/count_nucleobases.c
@@ -6,7 +6,7 @@
 #include <stdbool.h>
 int main() {
 
-  ssize_t len = 0;
+  size_t len = 0;
 
   unsigned long long counts[256] = {0};
 
@@ -32,8 +32,15 @@ int main() {
 					}
 				}
 			}
-		}  else { fprintf(stderr, "this does not look like a fasta file\n"); }
-	} else { fprintf(stderr, "could not read file\n"); }
+		}  
+		else { 
+			fprintf(stderr, "this does not look like a fasta file\n"); 
+			exit(EXIT_FAILURE);
+		}
+	} else { 
+		fprintf(stderr, "could not read file\n"); 
+		exit(EXIT_FAILURE);
+	}
 
   printf("A:%llu\nC:%llu\nG:%llu\nT:%llu\n",
          counts['a'] + counts['A'],