栈的应用：进制转换

#include <iostream>
#include <map>
using namespace std;
#define N 100
#define type int

type st[N];
int top = -1;
bool isEmpty() {
	return top == -1;
}

bool isFull() {
	return top == N - 1;
}


void push(int x) {
	if (!isFull()) st[++ top] = x;
	else cout << "full" << endl; 
}

void pop() {
	if (!isEmpty()) -- top;
	else cout << "empty" << endl;
}

int peek() {
	if (!isEmpty()) return st[top];
	cout << "empty" << endl;
}
map<int, char> mp{ {10,'A'},{11,'B'},{12,'C'},{13,'D'},{14,'E'},{15,'F'} }; 
void conversion(int x, int base) {
	while (x) {
		push(x % base);
		x /= base;
	} 
	while (!isEmpty()) {
		int res = peek();pop();
		if (res >= 10) cout << mp[res] << " ";
		else cout << res << " "; 
	}
	cout << endl;
}

int main() {
	int a = 1000;
	conversion(a, 16);
	return 0;
}