/in/foo.cc: In function 'int main()':
/in/foo.cc:32:7: warning: right operand of comma operator has no effect [-Wunused-value]
 b1++,s;
       ^
/in/foo.cc:50:8: warning: right operand of comma operator has no effect [-Wunused-value]
 b1++,s1;
        ^
/in/foo.cc:6:14: warning: unused variable 'x' [-Wunused-variable]
 int n1,n2,n3,x=0,y=0,n;
              ^
/in/foo.cc:6:18: warning: unused variable 'y' [-Wunused-variable]
 int n1,n2,n3,x=0,y=0,n;
                  ^
/in/foo.cc:6:22: warning: unused variable 'n' [-Wunused-variable]
 int n1,n2,n3,x=0,y=0,n;
                      ^