foo.cc: In function 'int main()':
foo.cc:9:22: error: expected ';' before 'return'
    9 | cout<<"1"<<" 1"<<endl
      |                      ^
      |                      ;
   10 | 
   11 | return 0;
      | ~~~~~~                
foo.cc:7:6: warning: unused variable 'n' [-Wunused-variable]
    7 | bool n;
      |      ^
foo.cc:8:6: warning: unused variable 'v' [-Wunused-variable]
    8 | char v;
      |      ^

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