/in/foo.c: In function 'main':
/in/foo.c:11:6: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
      while(a%c!=0||b%c!=0)
      ^~~~~
/in/foo.c:13:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while'
   a=c;
   ^
/in/foo.c:15:2: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printf("%d",c);
  ^~~~~~~~~~~~~~