What if we want to do a unbounded buffer, where there is no upper limit on the buffer size, but you just have to make sure that the consumers cannot underflow the buffer (i.e., cannot consume when the buffer is empty). Write the code for this bounded buffer. Use a C++ STL queue for the underlying data structure. 4. What if we want to do a unbounded buffer, where there is no upper limit on the buffer size, but you just have to make sure that the consumers cannot underflow the buffer (i.e., cannot consume when the buffer is empty). Write the code for this bounded buffer. Use a C++ STL queue for the underlying data structure. 4