4.1
#include <iostream>
void main41()
{
using namespace std;
cout<<"What is your first name?";
char fname[20];
cin.getline(fname,20);
//int fsize=sizeof(fname);
//cout<<b;
//cout<<fname;
cout<<endl<<"What is your last name ?";
char lname[20];
cin.getline(lname,20);
cout<<endl<<"what letter grade do you deserve?";
char grade;
cin>>grade;
cout<<"
what is your age?";
int age;
cin>>age;
cout<<endl<<"Name:"<<lname<<" ,"<<fname<<endl;
cout<<"Grade:"<<char(grade+1);
cout<<endl<<"Age:"<<age;
cin.get();
}4.2
#include <iostream>
#include <string>
using namespace std;
void main42()
{
string name;
cout<<"Enter your name:
";
//cin>>name;//一定要包含string头文件，否则会出错
getline(cin,name);
cout<<"Enter your favorite dessert:
";
string dessert;
getline(cin,dessert);
cout<<"I have some delicous "<<dessert;
cout<<" for you ,"<<name<<endl;
cin.get();
}4.3
#include <iostream>
using namespace std;
void main43()
{
const int ArrSize=20;
char name[ArrSize];
char xing[ArrSize/2];
cout<<"Enter your first name:";
cin.getline(name,20);
cout<<endl<<"Enter your last name:";
cin.get(xing,10);
cout<<endl<<"Here's the information in a single string "
<<xing<<","<<name;
cin.get();
}4.4
#include <iostream>
#include <string>
void main44()
{
using namespace std;
cout<<"Enter your First Name:";
string fname;
getline(cin,fname);
cout<<"
Enter your last name:";
string lname;
getline(cin,lname);
cout<<endl<<"Here's the information in a single string:"
<<lname<<", "<<fname;
cin.get();
}4.5
#include <iostream>
#include <string>
using namespace std;
struct CandyBar
{
string name;
double weight;
int kaluli;
};
void main45()
{
CandyBar snack={"OO CANDAY",2.5,60};
cout<<"name:"<<snack.name;
cout<<"
weight:"<<snack.weight<<"
kaluli: "<<snack.kaluli;
cin.get();
}