/in/foo.c: In function 'main':
/in/foo.c:10:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if(n>=3)
  ^~
/in/foo.c:12:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
   for(j=3;j<=n;j++)
   ^~~