运行 ID: 128873

Main.cc: In function ‘int main()’:
Main.cc:8:15: error: expected primary-expression before ‘<=’ token
   if((a>='a'&&<='z')||(a>='A'&&a<='Z')) 
               ^~
Main.cc:11:14: error: ‘A’ was not declared in this scope
    if(a>'Z'&&A<='Z'+4||a>'z') a-=26;
              ^
Main.cc:16:1: error: expected ‘;’ before ‘}’ token
 }
 ^