/in/foo.cc: In function 'int main()':
/in/foo.cc:28:7: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
       for(int j=1;j<=i>>1;++j)
       ^~~
/in/foo.cc:30:8: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
        ++f[i];
        ^~