Run id: 138387

Main.cc:15:4: error: expected unqualified-id before 'else'
    else if(a>=60&&a<70){
    ^
Main.cc:18:5: error: expected unqualified-id before 'if'
     if(a<60){
     ^
Main.cc:21:4: error: expected declaration before '}' token
    }
    ^