c++ - How to write strings and integers in a ring buffer? -

how write strings , integers in ring buffer? write multiple strings , integers ring buffer c++ knowledge limited. if need more info, please let me know. appreciate can provide.

here integer , string variables want write , write function of ring buffer:

string payload; int byte_pos;  size_t ringbuffer::write(u_char *data, size_t bytes) {   if (bytes == 0) return 0;    size_t capacity = capacity_;   size_t bytes_to_write = std::min(bytes, capacity - size_);    // write in single step   if (bytes_to_write <= capacity - end_index_)   {     memcpy(data_ + end_index_, data, bytes_to_write);     end_index_ += bytes_to_write;     if (end_index_ == capacity) end_index_ = 0;   }   // write in 2 steps   else   {     size_t size_1 = capacity - end_index_;     memcpy(data_ + end_index_, data, size_1);     size_t size_2 = bytes_to_write - size_1;     memcpy(data_, data + size_1, size_2);     end_index_ = size_2;   }    size_ += bytes_to_write;   return bytes_to_write; } 

you have convert std::string variable c-style pointer char:

string payload; char* cpayload = payload.c_str(); int len = strlen(cpayload); ringbuffer::write(cpayload, len*sizeof(char));