ADD file via upload

src/tool.h

@@ -0,0 +1,17 @@
+#ifndef TOOL_H
+#define TOOL_H
+
+#include<string>
+#include<vector>
+
+namespace tool{
+    std::vector<std::string>split(const std::string& str);
+
+    bool isNumber(const std::string& str);
+
+    std::string getCurrentTime();
+
+    std::string EreaseEmpty(const std::string& question);
+}
+
+#endif