初学者的C++练习题——（四）煎饼哥_用c++电子煎饼摊-优快云博客

该程序用C++编写，旨在让使用者输入10个人早餐吃的煎饼数量，并找出吃最多和最少煎饼的人。通过使用类`Person`存储ID和煎饼数量，程序首先收集数据，然后比较并输出吃最多和最少煎饼的人。最后，程序将所有人按吃的煎饼数量从多到少排序并输出。

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Pancake Glutton

Requires:
variables, data types, and numerical operators
basic input/output
logic (if statements, switch statements)
loops (for, while, do-while)
arrays

Write a program that asks the user to enter the number of pancakes eaten for breakfast by 10 different people (Person 1, Person 2, ..., Person 10)
Once the data has been entered the program must analyze the data and output which person ate the most pancakes for breakfast.

#include <iostream> using namespace std; class Person { private: int id_; int pancakeEaten_; public: void setId(int id) { id_ = id; } int getId() { return id_; } void setPancakeEaten(int pancakeEaten) { pancakeEaten_ = (pancakeEaten > 0) ? pancakeEaten : 0; } int getPancakeEaten() { return pancakeEaten_; } }; int main() { int personCount = 10; Person* person = new Person[personCount]; for(int i=0; i<personCount; i++) { person[i].setId(i+1); cout << "How many pancake(s) do you eat for breakfast, person " << person[i].getId() << "? "; int input; cin >> input; person[i].setPancakeEaten(input); } int idOfPersonEatMost = 1; int maxPancakeEaten = person[0].getPancakeEaten(); for(int i=1; i<personCount; i++) { if (maxPancakeEaten < person[i].getPancakeEaten()) { maxPancakeEaten = person[i].getPancakeEaten(); idOfPersonEatMost = person[i].getId(); } } cout << "Person " << idOfPersonEatMost << " ate the most pancakes for breakfast." << endl; system("pause"); }

★ Modify the program so that it also outputs which person ate the least number of pancakes for breakfast.
#include <iostream> using namespace std; class Person { private: int id_; int pancakeEaten_; public: void setId(int id) { id_ = id; } int getId() { return id_; } void setPancakeEaten(int pancakeEaten) { pancakeEaten_ = (pancakeEaten > 0) ? pancakeEaten : 0; } int getPancakeEaten() { return pancakeEaten_; } }; int main() { int personCount = 10; Person* person = new Person[personCount]; for(int i=0; i<personCount; i++) { person[i].setId(i+1); cout << "How many pancake(s) do you eat for breakfast, person " << person[i].getId() << "? "; int input; cin >> input; person[i].setPancakeEaten(input); } int idOfPersonEatMost = 1; int idOfPersonEatLeast = idOfPersonEatMost; int maxPancakeEaten = person[0].getPancakeEaten(); int minPancakeEaten = maxPancakeEaten; for(int i=1; i<personCount; i++) { if (maxPancakeEaten < person[i].getPancakeEaten()) { maxPancakeEaten = person[i].getPancakeEaten(); idOfPersonEatMost = person[i].getId(); } if (minPancakeEaten > person[i].getPancakeEaten()) { minPancakeEaten = person[i].getPancakeEaten(); idOfPersonEatLeast = person[i].getId(); } } cout << "Person " << idOfPersonEatMost << " ate the most number of pancakes for breakfast." << endl; cout << "Person " << idOfPersonEatLeast << " ate the least number of pancakes for breakfast." << endl; system("pause"); }

★★★★ Modify the program so that it outputs a list in order of number of pancakes eaten of all 10 people.
i.e.
Person 4: ate 10 pancakes
Person 3: ate 7 pancakes
Person 8: ate 4 pancakes
...
Person 5: ate 0 pancakes

#include <iostream> using namespace std; class Person { private: int id_; int pancakeEaten_; public: void setId(int id) { id_ = id; } int getId() { return id_; } void setPancakeEaten(int pancakeEaten) { pancakeEaten_ = (pancakeEaten > 0) ? pancakeEaten : 0; } int getPancakeEaten() { return pancakeEaten_; } }; void swap(Person* a, Person* b) { int id = a->getId(); a->setId(b->getId()); b->setId(id); int pancakeEaten = a->getPancakeEaten(); a->setPancakeEaten(b->getPancakeEaten()); b->setPancakeEaten(pancakeEaten); } int main() { int personCount = 10; Person* person = new Person[personCount]; for(int i=0; i<personCount; i++) { person[i].setId(i+1); cout << "How many pancake(s) do you eat for breakfast, person " << person[i].getId() << "? "; int input; cin >> input; person[i].setPancakeEaten(input); } for(int i=0; i<personCount-1; i++) { for(int j=0; j<(personCount-1-i); j++) { if (person[j].getPancakeEaten() > person[j+1].getPancakeEaten()) { swap(&person[j], &person[j+1]); } } } for(int i=0; i<personCount; i++) { cout << "Person " << person[personCount-1-i].getId() << " ate " << person[personCount-1-i].getPancakeEaten() << " pancakes." << endl; } system("pause"); }