/in/foo.cc: In function 'int main()':
/in/foo.cc:22:8: warning: unused variable 'm' [-Wunused-variable]
  int n,m=1,k=10;
        ^
/in/foo.cc:22:12: warning: unused variable 'k' [-Wunused-variable]
  int n,m=1,k=10;
            ^