/in/foo.c: In function 'main':
/in/foo.c:9:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(i=3;i<16;i++)
  ^~~
/in/foo.c:11:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   sum=0;
   ^~~