1 files changed, 3 insertions, 2 deletions

diff --git a/read_helper.h b/read_helper.h
index f8396f2..2256ef8 100644
--- a/read_helper.h
+++ b/read_helper.h
@@ -65,14 +65,14 @@ public:
     return dst(mt19937);
   }
 
-  void readFile() {
+  bool readFile() {
     this->population_vector.clear();
     auto read_number = 0UL;
     FILE *file = fopen(filename, "r");
 
     if (file == nullptr) {
       fprintf(stderr, "Unable to open file %s\n", filename);
-      exit(1);
+      return false;
     }
 
     P_ERR("Reading sample");
@@ -98,6 +98,7 @@ public:
       read_number++;
     fclose(file);
     P_ERR("\r");
+    return true;
   }
 
   void split_into(std::vector<key_type> &sample, std::vector<key_type> &p) {