一串十六进制以每两位形式转换成字符串

例如 

121209055822010053

转换后为 

cc953a161035

#include <stdio.h>
#include <string.h>

int main()
{
	char hex[200];
	char s[100];
	strcpy(hex,"98e1e97b3294cd43260aa8766dd21b9e354f5926d34f9b5fa510e84937316992a740a46b41d3e4fbe4ec285b2bc992db5f12d3cc0388e726b00f80fadd73f77846b40e8c75bb90739a484ec60a2c38422411f418e5ae075ac16194a3b1a60bd3");
	int L=strlen(hex), i, v;
	for (i=0;i<L/2;i++) 
	{
		sscanf(hex+i*2,"%2X",&v);
		s[i]=(char)(v&0xFFu);
	}

	s[i]=0;
	printf("%s\n",s);
		
	L=strlen(s);
	for (i=0;i<L;i++) 
	sprintf(hex+2*i,"%02x",(unsigned char)s[i]);

	hex[2*i+2]=0;
	printf("%s\n",hex);
}

以上代码输出：