avoid naked exit

3 files changed, 3 insertions, 3 deletions

diff --git a/fsa/queryproc/count_plain_grams.cpp b/fsa/queryproc/count_plain_grams.cpp
index ef400db9bc4..ffb5c730cdc 100644
--- a/fsa/queryproc/count_plain_grams.cpp
+++ b/fsa/queryproc/count_plain_grams.cpp
@@ -43,7 +43,7 @@ int main(int argc, char **argv)
 
   if(argc!=2){
     std::cerr << "usage: " << argv[0] << " fsa_file" << std::endl;
-    exit(1);
+    return 1;
   }
 
   FSA fsa(argv[1]);
diff --git a/fsa/queryproc/count_sorted_grams.cpp b/fsa/queryproc/count_sorted_grams.cpp
index cd047633e72..84350068f69 100644
--- a/fsa/queryproc/count_sorted_grams.cpp
+++ b/fsa/queryproc/count_sorted_grams.cpp
@@ -28,7 +28,7 @@ int main(int argc, char **argv)
 
   if(argc!=2){
     std::cerr << "usage: " << argv[0] << " sorted_fsa_file" << std::endl;
-    exit(1);
+    return 1;
   }
 
   FSA fsa(argv[1]);
diff --git a/fsa/queryproc/p2s_ratio.cpp b/fsa/queryproc/p2s_ratio.cpp
index 830985813a8..9238df6eddc 100644
--- a/fsa/queryproc/p2s_ratio.cpp
+++ b/fsa/queryproc/p2s_ratio.cpp
@@ -24,7 +24,7 @@ int main(int argc, char **argv)
 
   if(argc!=3){
     std::cerr << "usage: " << argv[0] << " plain_count_fsa_file sorted_count_fsa_file" << std::endl;
-    exit(1);
+    return 1;
   }
 
   FSA plain_fsa(argv[1]);