/in/foo.c: In function 'main':
/in/foo.c:7:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(int i=1;i<=sqrt(a);i++)
  ^~~
/in/foo.c:9:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   int n=0;
   ^~~