结果显示编译错误，求大神找出错误

#include<bits/stdc++.h>
using naamespace std;
int main(){
	int a,b;
	char c;
	cin>>a>>b;
	cin>>c;
	if(b==0&&c=='/'){
		cout<<"Divided by zero!"<<endl;
		return 0;
	}
	if(c=='+')
		cout<<a+b<<endl;
	else if(c=='-')
		cout<<a-b<<endl;
	else if(c=='*')
		cout<<a*b<<endl;
	else if(c=='/'){
	    if(b==0){
		cout<<"Divided by zero!"<<endl;
		return 0;
	    }
		cout<<a/b<<endl; 
	}
	else
		cout<<"Invalid operator!"<<endl;
	return 0;
}