bifo.cpp: In member function 'nmare nmare::operator-=(nmare)': bifo.cpp:96: warning: no return statement in function returning non-void bifo.cpp: In function 'int main()': bifo.cpp:138: warning: operation on 'cont' may be undefined bifo.cpp:129: warning: unused variable 'i' bifo.cpp: In function 'char desc(nmare, int)': bifo.cpp:125: warning: control reaches end of non-void function