编译通过了 但是运行时弹出以对话框上面是Run-Time Check Failure #3 - The variable 'side' is being used without being defined.明明定义过了side,为什么说没定义?

问题描述:

编译通过了 但是运行时弹出以对话框上面是Run-Time Check Failure #3 - The variable 'side' is being used without being defined.
明明定义过了side,为什么说没定义?

应该是没初始化吧……给个初值试试