/in/foo.c: In function 'main':
/in/foo.c:10:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   for(i=3;i<=n;i++);
   ^~~
/in/foo.c:11:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   {
   ^
/in/foo.c:9:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if(n>=3)
  ^~
/in/foo.c:11:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
   {
   ^