optimize some function and type

Author: DataEraserC

c/koishi/src/main.c

@@ -1,12 +1,13 @@
 #include "../include/koishi.h"
+extern LEVEL getlevel();
 int main(){
-    char *level[4]={"easy","normal","hard","extreme"};
+    char *level[4] = {"easy", "normal", "hard", "extreme"};
     LEVEL l;
-    l=getlevel();
-    while (l<1||l>4){
-        printf("the number you input(%d) is not listed\nplease input again:\n",l);
-        l=getlevel();
+    l = getlevel();
+    while (  l < 1  ||  l > 4  ){
+        printf("the number you input(%d) is not listed\nplease input again:\n", l);
+        l = getlevel();
     }
-    printf("you choose %d %s\n",l,level[l-1]);
+    printf("you choose %d %s\n", l, level[l-1]);
     return 0;
 }

cpp/koishi/CMakeLists.txt

@@ -0,0 +1,13 @@
+PROJECT(KOISHI)
+CMAKE_MINIMUM_REQUIRED(VERSION 2.9)
+INCLUDE_DIRECTORIES(
+  ${CMAKE_BINARY_DIR}/../include
+)
+AUX_SOURCE_DIRECTORY(
+  ${CMAKE_BINARY_DIR}/../src
+  DIR_SRC
+)
+ADD_EXECUTABLE(
+  koishi
+  ${DIR_SRC}
+)

cpp/koishi/include/koishi.hpp

@@ -0,0 +1,13 @@
+#ifndef _KOISHI_HPP_
+#define _KOISHI_HPP_
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <iostream>
+typedef enum level {
+    easy=1,
+    normal,
+    hard,
+    extreme
+    }LEVEL;
+#endif

cpp/koishi/src/koishi.cpp

@@ -0,0 +1,11 @@
+#include "../include/koishi.hpp"
+LEVEL getlevel(){
+    short int l;
+    std::cout << "please input the level number:" << std::endl << 
+    "1.easy" << std::endl << 
+    "2.normal" << std::endl << 
+    "3.hard" << std::endl << 
+    "4.extreme" << std::endl;
+    std::cin >> l;
+    return (LEVEL)l;
+}

cpp/koishi/src/main.cpp

@@ -0,0 +1,14 @@
+#include "../include/koishi.hpp"
+extern LEVEL getlevel();
+int main(){
+    std::string level[4] = {"easy", "normal", "hard", "extreme"};
+    LEVEL l;
+    l = getlevel();
+    while (  l < 1  ||  l > 4  ){
+        std::cout << "the number you input(" << l << ") is not listed" << std::endl << 
+        "please input again:" << std::ends << std::endl;
+        l = getlevel();
+    }
+    std::cout << "you choose " << l << " " << level[l-1] << std::endl;
+    return 0;
+}