在c++中int转十六进制八进制二进制字符串
#include <iostream> char digits[]= { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z' }; std::string ToUnsignedString(int i, int shift) { char buf[32]; char * pBuf = buf; int charPos = 32; int radix = 1<<shift; int mask = radix - 1; do { pBuf[--charPos] = digits[i&mask]; i = i>>shift; }while(i != 0); std::string str; int strLen = 32 - charPos; pBuf = pBuf+charPos; while(strLen) { str.push_back(*pBuf); pBuf++; strLen--; } return str; } std::string ToHexString(int i) { return ToUnsignedString(i, 4); } std::string ToOctalString(int i) { return ToUnsignedString(i, 3); } std::string ToBinaryString(int i) { return ToUnsignedString(i, 1); } int main() { std::cout<<ToHexString(200).c_str()<<std::endl; std::cout<<ToOctalString(200).c_str()<<std::endl; std::cout<<ToBinaryString(200).c_str()<<std::endl; return 0; }
结果如下:
c8
310
11001000
补充:软件开发 , C++ ,