IP地址ascii码转16进制

#include <stdlib.h>
void split_ip_address(char* address,int* output)
{
	char* s=(char*)address;
	char* ss=nullptr;
	int n=0;
	while (n<4&&(ss=strchr(s,"."))!=nullptr)
	{
		*ss=0;
		output[n++]=atoi(s);
		s=ss+1;
	}
	if (n<4&&*s)
		output[n]=atoi(s);
}
int main()
{
	char buf0[]="192.168.0.253";
	int a[4];
	split_ip_address(buf0,a);
	char buf1[16],buf2[16];
	sprintf_s(buf1,"%d%d%d%d",a[0],a[1],a[2],a[3]);
	sprintf_s(buf2,"%02X%02X%02X%02X",a[0],a[1],a[2],a[3]);
	printf("buf1=%s\n",buf1);
	printf("buf2=%s\n",buf2);
	return 0;
}

//提取出IP地址即char buf0[]="192.168.0.253"中的数字“192168000253”保存在char buf1[]中，再转为C0A800FD，以16进制保存在char buf2[]中
//printf("%s",buf2);   输出结果：C0A800FD
#include <stdio.h>
char buf0[]="192.168.0.253";
char buf1[13];
char buf2[9];
int v[4];
int main() {
    sscanf(buf0,"%d.%d.%d.%d",&v[0],&v[1],&v[2],&v[3]);
    sprintf(buf1,"%03d%03d%03d%03d",v[0],v[1],v[2],v[3]);
    printf("buf1:[%s]\n",buf1);
    sprintf(buf2,"%02X%02X%02X%02X",v[0],v[1],v[2],v[3]);
    printf("buf2:[%s]\n",buf2);
    return 0;
}
//buf1:[192168000253]
//buf2:[C0A800FD]
//