/in/foo.cc: In function 'int main()':
/in/foo.cc:10:3: warning: statement has no effect [-Wunused-value]
  n==100*b+10*s+g;
  ~^~~~~~~~~~~~~~
/in/foo.cc:5:14: warning: unused variable 't' [-Wunused-variable]
  int n,g,s,b,t;
              ^