Run id: 900

Main.cc:6:1: error: expected primary-expression before 'using'
 using namespace std;
 ^
Main.cc:6:1: error: expected '}' before 'using'
Main.cc:6:1: error: expected ',' or ';' before 'using'
Main.cc: In function 'int main()':
Main.cc:7:10: error: 'int main()' redeclared as different kind of symbol
 int main(){
          ^
Main.cc:3:5: error: previous declaration of 'int main'
 int main
     ^
Main.cc:17:14: warning: comparison with string literal results in unspecified behaviour [-Waddress]
  else if("0"<"9"){
              ^
Main.cc: At global scope:
Main.cc:23:1: error: expected declaration before '}' token
 }
 ^