读取字符串，数字并输出

#include <iostream>

int main()
{
 using namespace std;
 
 cout<<"What is your first name?";
 char firstname[20];
 cin.get(firstname,20);
 cin.get();
 
 cout<<"What is your last name?";
 char lastname[20];
 cin.get(lastname,20);
 cin.get();
 cout<<"What letter grade do you deserve?";
 
 char letter;
 cin>>letter;
 letter=letter+1;
 cout<<"What is your age?";
 int age;
 cin>>age;
 cout<<"Name:"<<lastname<<", "<<firstname<<endl;
 cout<<"Grade"<<letter<<endl;
 cout<<"Age:"<<age<<endl;

 return 0;
}

运行：

What is your first name?输入：Betty Sue

What is your last name?输入：Yew

What letter grade do you deserve?输入：B

What is your age?输入：22

Name:Yew,Betty Sue

Grade:C

Age:22