Main.cc: In function 'int main()': Main.cc:10:8: error: 'a' was not declared in this scope if(a%4==0&&a%100!=0)(a%400==0&&a%100==0&&a%4==0) ^ Main.cc: At global scope: Main.cc:13:5: error: expected unqualified-id before 'else' else{ ^ Main.cc:16:5: error: expected unqualified-id before 'return' return 0; ^