Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
144874 c13 07大小写转换 C++ Compile Error 0 MS 0 KB 169 2026-01-24 19:21:30

Tests(0/0):

Code:

using namespace std; int main(){ char a; cin>>a; int b='a'-'A'; if(a>='a'&&a<='z')cout<<char(a-b)<<endl; else cout<<char(a+b)<<endl; return 0; }

Run Info:

Main.cc: In function 'int main()':
Main.cc:4:5: error: 'cin' was not declared in this scope
     cin>>a;
     ^
Main.cc:6:23: error: 'cout' was not declared in this scope
     if(a>='a'&&a<='z')cout<='a'&&a<='z')cout<