/in/foo.cc: In function 'int main()':
/in/foo.cc:9:7: warning: 'n' may be used uninitialized [-Wmaybe-uninitialized]
    9 |       if(n==1)
      |       ^~
/in/foo.cc:5:15: note: 'n' was declared here
    5 |         int k,n,a,b,c;
      |               ^
/in/foo.cc:16:27: warning: 'c' may be used uninitialized [-Wmaybe-uninitialized]
   16 |   cout<<a<<endl<<b<<endl<<c;
      |                           ^
/in/foo.cc:5:21: note: 'c' was declared here
    5 |         int k,n,a,b,c;
      |                     ^
/in/foo.cc:16:18: warning: 'b' may be used uninitialized [-Wmaybe-uninitialized]
   16 |   cout<<a<<endl<<b<<endl<<c;
      |                  ^
/in/foo.cc:5:19: note: 'b' was declared here
    5 |         int k,n,a,b,c;
      |                   ^
/in/foo.cc:16:9: warning: 'a' may be used uninitialized [-Wmaybe-uninitialized]
   16 |   cout<<a<<endl<<b<<endl<<c;
      |         ^
/in/foo.cc:5:17: note: 'a' was declared here
    5 |         int k,n,a,b,c;
      |                 ^