foo.cc: In function ‘int main()’:
foo.cc:8:9: warning: ‘a’ is used uninitialized [-Wuninitialized]
    8 |         if(a<b)
      |         ^~
foo.cc:7:17: note: ‘a’ was declared here
    7 |         int     a,b,c;
      |                 ^
foo.cc:8:9: warning: ‘b’ is used uninitialized [-Wuninitialized]
    8 |         if(a<b)
      |         ^~
foo.cc:7:19: note: ‘b’ was declared here
    7 |         int     a,b,c;
      |                   ^
foo.cc:9:17: warning: ‘c’ may be used uninitialized [-Wmaybe-uninitialized]
    9 |                 if(b<c)
      |                 ^~
foo.cc:7:21: note: ‘c’ was declared here
    7 |         int     a,b,c;
      |                     ^