foo.cc: In function ‘int main()’:
foo.cc:10:9: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
   10 |         for(int j=i+1;j<=n;j++)
      |         ^~~
foo.cc:16:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
   16 |                 std::cout<<num;
      |                 ^~~