C++計算器代碼

#include 
using namespace std;

int main()
{
	while(true)
	{
		try
		{
			int x;
			scanf("%d",&x);
			char c;
			scanf("%c",&c);
			int y;
			scanf("%d",&y);
			
			switch(c)
			{
			case '+':
				cout<通過編譯