dev c++ 里运行程序为什么会出现这样啊，昨天还好好的

Question

D:\LenovoSoftstore\Install\DevC\MinGW64\x86_64-w64-mingw32\include\stdio.h In file included from D:/LenovoSoftstore/Install/DevC/MinGW64/x86_64-w64-mingw32/include/stdio.h
2 5 D:\c exercise\bian_liang_jiao_huan.cpp [Error] redefinition of 'int main()'
5 20 D:\c exercise\bian_liang_jiao_huan.cpp [Error] 'scanf' was not declared in this scope
2 5 D:\LenovoSoftstore\Install\DevC\MinGW64\x86_64-w64-mingw32\include\stdio.h [Note] 'int main()' previously defined here
12 20 D:\c exercise\bian_liang_jiao_huan.cpp [Error] 'printf' was not declared in this sc

试哪一个代码结果都是不行，一直在报错

Answer 1

其他编辑器试过没，代码发一下。