[C++知识库]广西大学oj1037(小西的c语言作业)

直接展示源码，采用或者用于参考的，麻烦给个赞呗，谢谢！

#include <iostream>
#include <cmath>
#include <string>
using namespace std;

int main()
{
	string s;
	while (cin >> s) {
		string a, b;
		char ch = ' ';
		int A = 0, B = 0;
		int flag = 1, cnt = 0, unt = 0;
		for (int i = 0; i < s.length(); i++)
		{
			//如果是&，不用第一个if语句的话，ch==' '(吾不知为什么)
			if (s[i] == '&')
			{
				ch = '&';
				flag = 0;
			}
			else if (s[i] > '9') {
				ch = s[i];
				flag = 0;
			}
			else if (flag&& s[i] >= '0' && s[i] <= '9'){
			    a += s[i];
				cnt++;
			}
			else if (!flag && s[i] >= '0' && s[i] <= '9') {
				b += s[i];
				unt++;
			}
		}
		for (int i = cnt - 1; i >= 0; i--)
		{
			int x = pow(10, i);
			A += (a[cnt - 1 - i] - '0') * x;
		}
		for (int i = unt - 1; i >= 0; i--)
		{
			int x = pow(10, i);
			B += (b[unt - 1 - i] - '0') * x;
		}
		//cout << ch << endl;
		int tmp;
		switch (ch)
		{
		case '^':
			tmp = A ^ B;
			cout << tmp << endl;
			break;
		case '~':
			tmp = ~B;
			cout << tmp << endl;
			break;
		case '&':
			tmp = A & B;
			cout << tmp << endl;
			break;
		case '|':
			tmp = A | B;
			cout << tmp << endl;
			break;
		default:
			break;
		}
	}
}