Mã chấm: 268609

Main.cc: In function ‘int main()’:
Main.cc:6:11: error: expected primary-expression before ‘%’ token
     scanf(%lf, &c);
           ^
Main.cc:6:12: error: ‘lf’ was not declared in this scope
     scanf(%lf, &c);
            ^~
Main.cc:16:9: error: ‘k’ was not declared in this scope
         k++;
         ^