C++ Premer--Cp2,3,4

2.4 Age problem [rather easy]

#include "stdafx.h"
#include<iostream>

#include<stdio.h>

using namespace std;
void minute(int t, int h);


int main()
{
    int n,m,t,s,h;
    cout << "please input \t minutes\t hour\t\n";
    cin  >> t >> h;
    minute(t, h);
    return 0;
}

void minute(int t,int h)
{
    cout << "Time :" << t << ":" << h;

}

4.1 Cout problem

int main()
{
    char name[20], lname[10];
    char k; int m;
    cout << "what's your name?\t";
    cin.getline(name, 20).get();

    cout << "\nwhat's your last name?\t";
    cin >> lname;//I don't know whether \n will exsit in the waiting place;
    cout << "\nwhat letter grade do you deserve?\t";
    cin >> k;
    cout << "waht's your age?\t";
    cin >> m;
    cout << "\nName\t" << lname << "," << name << endl;
    cout << "Grade:\t" << k  << endl;
    cout << "Age:\t" << m << endl;
    return 0;
}

4.2 string2cout

#include "stdafx.h"
#include<iostream>
#include <string>
#include<stdio.h>

using namespace std;


int main()
{
    string name, lname;
    char k; int m;
    cout << "what's your name?\t";
    getline(cin,name);// must use getline,in fact,we don't need to use get again.getline has getthe'\n'

    cout << "\nwhat's your last name?\t";
    cin >> lname;//I don't know whether \n will exsit in the waiting place;
    cout << "\nwhat letter grade do you deserve?\t";
    cin >> k;
    cout << "waht's your age?\t";
    cin >> m;
    cout << "\nName\t" << lname << "," << name << endl;
    cout << "Grade:\t" << k  << endl;
    cout << "Age:\t" << m << endl;
    return 0;
    }

4.3 link

int main()
{
    char name[20], lname[20];
    char k; int m;
    cout << "Enter your first name\t";
    cin.getline(name,20);// must use getline

    cout << "\nEnter your last name \t";
    cin >> lname;
    //remember using strcat
    strcat(name, " , ");
    strcat(name, lname);
    cout << "using only one string\t\t" << name << endl;
    return 0;
}

4.4 link string

int main()
{
    string name, lname;
    char k; int m;
    cout << "Enter your first name\t";
    getline(cin,name);// must use getline

    cout << "\nEnter your last name \t";
    cin >> lname;
    //remember using strcat
    name = name + "," + lname;
    cout << "using only one string\t\t" << name << endl;
    return 0;
}

4.5 candybar

int main()
{
    struct candybar 
    {
        string brand;
        double weight;
        int kalori;
    }snake{"mocha macha",2.3,350};
    cout << "brand\t" << snake.brand;
    cout << "\nweight\t" << snake.weight;
    cout << "\nkalori\t" << snake.kalori;
    return 0;
}

Array Vector 没有做题，不会用！