Main.cc: In function 'int main()':
Main.cc:8:5: error: expected ';' before 'int'
int a;
^
Main.cc:8:10: warning: statement has no effect [-Wunused-value]
int a;
^
Main.cc:9:10: error: 'a' was not declared in this scope
cin>>a;
^
Main.cc:25:13: error: expected '}' at end of input
return 0;
^