大家好！ 我有一个Visual Studio 2015项目。如果尝试在x64中进行构建，则可以同时在x86中进行构建 我有以下错误。我没有更改“默认”配置的任何内容。

关于我为什么遇到这些问题的任何线索_

Error (active)      cannot open source file "algorithm" 
Error (active)      cannot open source file "cassert"   
Error (active)      cannot open source file "cassert"   
Error (active)      cannot open source file "cmath" 
Error (active)      cannot open source file "cstddef"   
Error (active)      cannot open source file "cstring"   
Error (active)      cannot open source file "ctype.h"   
Error (active)      cannot open source file "excpt.h"   
Error (active)      cannot open source file "excpt.h"   
Error (active)      cannot open source file "excpt.h"   
Error (active)      cannot open source file "fstream"   
Error (active)      cannot open source file "functional"
Error (active)      cannot open source file "iostream"  
Error (active)      cannot open source file "limits"    
Error (active)      cannot open source file "map"   
Error (active)      cannot open source file "memory"    
Error (active)      cannot open source file "stdarg.h"  
Error (active)      cannot open source file "stdarg.h"  
Error (active)      cannot open source file "stdlib.h"