运行 ID: 6273

Main.cc:6:9: error: stray ‘\342’ in program
     if(a≥10&&a≤99){
         ^
Main.cc:6:10: error: stray ‘\211’ in program
     if(a≥10&&a≤99){
          ^
Main.cc:6:11: error: stray ‘\245’ in program
     if(a≥10&&a≤99){
           ^
Main.cc:6:17: error: stray ‘\342’ in program
     if(a≥10&&a≤99){
                 ^
Main.cc:6:18: error: stray ‘\211’ in program
     if(a≥10&&a≤99){
                  ^
Main.cc:6:19: error: stray ‘\244’ in program
     if(a≥10&&a≤99){
                   ^
Main.cc:4:10: error: default arguments are only permitted for function parameters [-fpermissive]
     int a=0;
          ^
Main.cc:4:12: error: expected ‘)’ before ‘;’ token
     int a=0;
            ^
            )
Main.cc:3:11: note: to match this ‘(’
 int main()(
           ^
Main.cc:3:1: error: ‘main’ declared as function returning a function
 int main()(
 ^~~
Main.cc:5:5: error: ‘cin’ does not name a type
     cin>>a;
     ^~~
Main.cc:6:5: error: expected unqualified-id before ‘if’
     if(a≥10&&a≤99){
     ^~
Main.cc:8:2: error: expected unqualified-id before ‘else’
 }else {cout<<"0"<