运行 ID: 7674

Main.cc: In function ‘int main()’:
Main.cc:8:15: error: ‘floor’ was not declared in this scope
         int b=floor(a);
               ^~~~~
Main.cc:8:15: note: suggested alternative: ‘float’
         int b=floor(a);
               ^~~~~
               float
Main.cc:12:15: error: ‘ceil’ was not declared in this scope
         int c=ceil(a);
               ^~~~