/in/foo.cc: In function 'int main()':
/in/foo.cc:7:10: warning: left operand of comma operator has no effect [-Wunused-value]
    7 |         x<=m,y<=k,z<=r;
      |         ~^~~
/in/foo.cc:7:15: warning: right operand of comma operator has no effect [-Wunused-value]
    7 |         x<=m,y<=k,z<=r;
      |              ~^~~
/in/foo.cc:7:20: warning: right operand of comma operator has no effect [-Wunused-value]
    7 |         x<=m,y<=k,z<=r;
      |                   ~^~~
/in/foo.cc:10:36: error: expected ';' before '}' token
   10 |                 n=(m-x)+(k-y)+(r-z)
      |                                    ^
      |                                    ;
   11 |         }
      |         ~