#include
using namespace std;
int main() {
char ch;
int n1,n2;float n3,n4;
cin>>ch;
while(ch!=’\0’){
switch(ch){
case ‘+’:
cin>>n1;
cin>>n2;
cout<<n1+n2;
break;
case ‘-’:
cin>>n1;
cin>>n2;
cout<<n1-n2;
break;
case ‘’:
cin>>n1;
cin>>n2;
cout<<n1n2;
break;
case ‘/’:
cin>>n3;
cin>>n4;
cout<<n3/n4;
break;
case ‘%’:
cin>>n1;
cin>>n2;
cout<<n1%n2;
break;
case ‘X’:
return 0;
case ‘x’:
return 0;
default:
cout<<“Invalid operation. Try again”;
}
cout<<endl;
ch=’\0’;
cin>>ch;
}
return 0;
}
