c++怎么写一个函数把输入无论是什么类型都转换成二进制？？

Question

#include "pch.h"

#include <iostream>

using namespace std;//

void allto2(void *p, int b) {

unsigned char n;

char f, *q;

for (f = 0, q = (char *)p + b - 1; q >= p; q--)

for (n = 0x80; n; n >>= 1) {

cout << (*q&n || 0);

f = 1;

}

cout << endl;

}

void main(void) {

double x;

float y;

int z;

char c;

cout << "Input a double-precision number...\nx=";

cin >> x;

allto2(&x, sizeof(x));

cout << "Input a floating number...\ny=";

cin >> y;

allto2(&y, sizeof(y));

cout << "Enter an integer...\nz=";

cin >> z;

allto2(&z, sizeof(z));

cout << "Enter a char...\nc=";

cin >> c;

allto2(&c, sizeof(c));

}

我想输入一个数程序自动判断是什么类型然后计算，我用了if语句但是没用，有没有大神帮帮忙