Run id: 133500

Main.cc: In function 'int main()':
Main.cc:12:5: error: expected ')' before 'return'
     return 0; 
     ^
Main.cc:9:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 scanf("%lf",&r);
                ^