运行 ID: 20236

Main.cc: In function ‘int main()’:
Main.cc:6:33: error: expected primary-expression before ‘=’ token
     if(a%4==0||(a%100==0&&a%400?=0)) cout<<"No";
                                 ^
Main.cc:6:35: error: expected ‘:’ before ‘)’ token
     if(a%4==0||(a%100==0&&a%400?=0)) cout<<"No";
                                   ^
Main.cc:6:35: error: expected primary-expression before ‘)’ token