c/c++实现rgb转16色
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如果已知rgb值，能否根据他们转成16色呢？（PS∶不是转换成十六进制）
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#include <sstream> /** * Transform RGB value to hex. */ std::string rgb2hex(int r, int g, int b, bool with_head = false); std::string rgb2hex(int r, int g, int b, bool with_head) { std::stringstream ss; if (with_head) ss << "#"; ss << std::hex << (r << 16 | g << 8 | b); return ss.str();测试结果：
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unsigned short convert_rgb_to_16_bit(unsigned char red, unsigned char green, unsigned char blue) { return (red << 11) + (green << 5) + blue; }
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