/in/foo.cc: In function 'int main()':
/in/foo.cc:6:8: warning: unused variable 'a' [-Wunused-variable]
    int a,b,c,js,w;
        ^
/in/foo.cc:6:10: warning: unused variable 'b' [-Wunused-variable]
    int a,b,c,js,w;
          ^
/in/foo.cc:6:12: warning: unused variable 'c' [-Wunused-variable]
    int a,b,c,js,w;
            ^
/in/foo.cc:6:14: warning: unused variable 'js' [-Wunused-variable]
    int a,b,c,js,w;
              ^
/in/foo.cc:6:17: warning: unused variable 'w' [-Wunused-variable]
    int a,b,c,js,w;
                 ^