/in/foo.cc: In function 'int main()':
/in/foo.cc:16:5: error: expected ';' before 'j'
     j=1;
     ^
/in/foo.cc:16:8: warning: statement has no effect [-Wunused-value]
     j=1;
        ^
/in/foo.cc:14:9: warning: unused variable 'n' [-Wunused-variable]
     int n=1;
         ^