/in/foo.cc: In function 'int main()':
/in/foo.cc:12:23: warning: 'sum1' may be used uninitialized [-Wmaybe-uninitialized]
   12 |                 printf("%.2f",sum1);
      |                 ~~~~~~^~~~~~~~~~~~~
/in/foo.cc:5:20: note: 'sum1' was declared here
    5 |     double x,y,p,n,sum1,sum2;
      |                    ^~~~