c语言字符串转换数组C语⾔字节数组和hex和互相转换C语⾔字节数组和hex和互相转换
#include<iostream>
#include<string.h>
#include<stdio.h>
//字节流转换为⼗六进制字符串
void ByteToHexStr(const unsigned char* source, char* dest, int sourceLen)
{
short i;
unsigned char highByte, lowByte;
for (i = 0; i < sourceLen; i++)
{
highByte = source[i] >> 4;
lowByte = source[i] & 0x0f;
highByte += 0x30;
if (highByte > 0x39)
dest[i * 2] = highByte + 0x07;
else
dest[i * 2] = highByte;
lowByte += 0x30;
if (lowByte > 0x39)
dest[i * 2 + 1] = lowByte + 0x07;
else
dest[i * 2 + 1] = lowByte;
}
return;
}
//⼗六进制字符串转换为字节流
void HexStrToByte(const char* source, unsigned char* dest, int sourceLen)
{
short i;
unsigned char highByte, lowByte;
for (i = 0; i < sourceLen; i += 2)
{
highByte = toupper(source[i]);
lowByte = toupper(source[i + 1]);
if (highByte > 0x39)
highByte -= 0x37;
else
highByte -= 0x30;
if (lowByte > 0x39)
lowByte -= 0x37;
else
lowByte -= 0x30;
dest[i / 2] = (highByte << 4) | lowByte;
}
return;
}
int main()
{
char array[5] = { 12,45,-12,34,32 };
char out[1024] = { 0 };
char arrayout[1024] = { 0 };
ByteToHexStr((const unsigned char*)array, out, 5);
printf("%s\n",out);
HexStrToByte((const char*)out, (unsigned char*)arrayout, strlen(out));
printf("{");
for(int i = 0; i<strlen(arrayout);i++)
{
printf("%d ",arrayout[i]);
}
printf("}");
}

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