样例全过但是WA

#include<iostream>
using namespace std;
int main()
{
	int a,b;
	char c;
	cin>>a>>b>>c;
	switch(c)
	{	
		case '+': cout<<a+b<<endl;break;
		case '-': cout<<a-b<<endl;break;
		case '*': cout<<a*b<<endl;break;
		case '/': if(b!=0) {cout<<a/b<<endl;break;}else cout<<"Divided by zero!"<<endl;break;
		default: cout<<"Invalid operrator!"<<endl;
	}
	return 0;
}