十进制转十六进制的C语言实现

#include
#include
#include
void reversestr(char*source,char target[],unsigned int length);
void tohex(unsigned long num,char*hexStr);
int main()
{
	char hexStr[16];
	int num;
	printf("请输入一个十进制数：\n");
	scanf("%d",&num);
	tohex(num,hexStr);
	printf("转换成的十六进制为：%s\n",hexStr);
	system("pause");
}
void reversestr(char*source,char target[],unsigned int length)
{
	unsigned int i;
	for(i=0;i