Question

我正在参加cplusplus.com初学者练习，以使用我在c ++中学到的知识。我想出了Pancake Glutton练习。

Pancake Glutton

要求：变量，数据类型和数字运算符基本输入/输出逻辑（if语句，switch语句）循环（for，while，do-while）阵列

写一个程序，要求用户输入由10个不同的人（第1人，第2人，......，第10人）吃早餐的煎饼数量一旦输入数据，程序必须分析数据并输出哪个人吃早餐最煎饼。

★修改程序，以便输出哪个人吃早餐的煎饼数量最少。

★★★★修改程序，使其按照所有10个人吃的煎饼数量顺序输出一个列表。

我的程序解决了这个问题，但我这样做了用户插入的人数。我的问题是当程序找到吃最少量的煎饼的人时，我的程序崩溃了。

#include <iostream>
#include <string>
#include <sstream>

using namespace std;

int people,i,maxi=0,cakes, mini=0;
string name,glutton,nibbler;

int main()
{
    //Ask user the amount of people that have eaten pancakes
    cout<<"How many people have eaten pancakes? \n";
    cin>>people;

    //Assign the names of each person that ate pancakes
    string names[people];
    for(i=0;i<people;i++){
        cout<<"Name? ";
        cin>>name;
        names[i]=name;
    }

    cout<<endl;

    //Ask how many pancakes each person has eaten
    int nums[people];
    for(i=0;i<people;i++){
        cout<<"How many pancakes did "<<names[i]<<" eat?"<<endl;
        cin>>cakes;
        nums[i]=cakes;
    }

    cout<<endl;

    //Compare to take the person that ate the most
    for(i=0;i<people;i++){
        if(nums[i]>maxi){
            maxi=nums[i];
            glutton=names[i];
        }
    }

    mini=maxi;
    /*I assigned the value of max to mini to make starting
    *point of comparison to look for the one that ate the
    *least
    */

    //Compare for the person that ate the least
    /**This is what makes my program explode, and I don't know why*/
    for(i=0;i<people;i--){
        if(nums[i]<mini){
            mini=nums[i];
            nibbler=names[i];
        }
    }

    cout<<glutton<<" ate the most"<<endl;
    cout<<nibbler<<" ate the least"<<endl;

    return 0;
}

Answer 1

基本上我发现我可以使用数组中的位置来缩短代码，更容易理解并且显然更快。我知道这种程序记忆没什么关系，但我应该从一开始就养成习惯。

#include <iostream>
#include <string>

using namespace std;

int people,i,glutton=0,cakes,nibbler=0;
string name;

int main()
{
    //Ask user the amount of people that have eaten pancakes
    cout<<"How many people have eaten pancakes? \n";
    cin>>people;

    //Assign the names of each person that ate pancakes
    string names[people];
    for(i=0;i<people;i++){
        cout<<"Name? ";
        cin>>name;
        names[i]=name;
    }

    cout<<endl;

    //Ask how many pancakes each person has eaten
    int nums[people];
    for(i=0;i<people;i++){
        cout<<"How many pancakes did "<<names[i]<<" eat?"<<endl;
        cin>>cakes;
        nums[i]=cakes;
    }

    cout<<endl;

    //Compare to take the person that ate the most and the least

    for(i=1;i<people;i++){
        if(nums[i]>nums[glutton]){
            glutton=i;
        }
        if(nums[i]<nums[nibbler]){
            nibbler=i;
        }
    }

    cout<<names[glutton]<<" ate the most"<<endl;
    cout<<names[nibbler]<<" ate the least"<<endl;

    return 0;
}

Pancake Glutton - 一个吃得最少的人

1 个答案: