foo.cc: In function ‘int main()’:
foo.cc:7:25: warning: ‘n’ is used uninitialized [-Wuninitialized]
    7 |         cout<<n-ceil(y/x);
      |                         ^
foo.cc:6:14: note: ‘n’ was declared here
    6 |         int  n,y;
      |              ^
foo.cc:7:21: warning: ‘y’ is used uninitialized [-Wuninitialized]
    7 |         cout<<n-ceil(y/x);
      |                 ~~~~^~~~~
foo.cc:6:16: note: ‘y’ was declared here
    6 |         int  n,y;
      |                ^
foo.cc:7:21: warning: ‘x’ is used uninitialized [-Wuninitialized]
    7 |         cout<<n-ceil(y/x);
      |                 ~~~~^~~~~
foo.cc:5:16: note: ‘x’ was declared here
    5 |         double x;
      |                ^