restore changes

Author: DataEraserC

cpp/koishi/src/koishi.cpp

@@ -1,6 +1,6 @@
 #include "../include/koishi.hpp"
 LEVEL getlevel(){
-    char l;
+    short int l;
     std::cout << "please input the level number:" << std::endl << 
     "1.easy" << std::endl << 
     "2.normal" << std::endl << 
@@ -9,5 +9,5 @@ LEVEL getlevel(){
     std::cin >> l;
     std::cin.clear();
     std::cin.ignore(1024,'\n');
-    return (LEVEL)(l-48);
+    return (LEVEL)l;
 }