十六进制转二进制输出

#include <stdio.h>

//hexadecimal to binary
int main()
{
	char Table[16][5] = {"0000","0001","0010","0011","0100","0101","0110","0111","1000","1001","1010","1011","1100","1101","1110","1111"};
	char Str[] = "1D 00 04 34 4C 98";
	char *p = NULL;
	p = Str;
	while(*p){
		if(*p == ' '){
			p++;
			continue;
		}
		if('0' <= *p && *p <= '9')
			printf("%s",Table[*p-'0']);
		else
			printf("%s",Table[*p-'A'+10]);
		p++;
	}
	printf("\n");
	return 0;
}

输出结果：

000111010000000000000100001101000100110010011000