C++结构体学习案例

# include <iostream>
using namespace std;
# include <string>
# include <ctime>
 
// 定义结构体
struct Student{
    string sName;
    int score;
};
 
struct Teacher{
    string tName;
    // student array 
    struct Student sArray[5];
};
 
//给老师和学生信息赋值的函数, 传入老师的数组和数组长度 //-----------------
void allocateSpace(struct Teacher tArray[], int len){  
    string nameSeed = "ABCDE";
    for(int i = 0; i < len; i++){
        tArray[i].tName = "Teacher_";
        tArray[i].tName += nameSeed[i];
 
        for(int j = 0; j < 5; j++){
            tArray[i].sArray[j].sName = "Student_";
            tArray[i].sArray[j].sName += nameSeed[j];
 
            int random = rand() % 61 + 40; // 0+4 ~ 60+40      -----------------------------
            tArray[i].sArray[j].score = random;
        }
    }
}
 
void printInfo(struct Teacher tArray[], int len){
    for (int i = 0; i < len; i++){
        cout << "老师姓名：" << tArray[i].tName << endl;
        for (int j = 0; j < 5 ; j++){
            cout << "\t学生姓名：" << tArray[i].sArray[j].sName << " 分数: " << tArray[i].sArray[j].score << endl ;
        }
    }
}
 
// main
int main(){
 
    // 随机数种子 --------------------
    srand((unsigned int) time(NULL)); 
 
 
    // 1.创建3名老师的数组
    struct Teacher tArray[3];
    // 2.通过函数给3名老师的信息赋值，并给老师带的学生信息赋值
    int len = sizeof(tArray) / sizeof(tArray[0]);
    allocateSpace(tArray, len);
    // 3.打印所有老师及所带学生的信息
    printInfo(tArray, len);
 
    return 0;
}

# include <iostream>
using namespace std;
# include <string>
 
struct Hero{
    string name;
    int age;
    string sex;
};
 
void bubbleSort(struct Hero heroArray[], int len){
    for (int i = 0; i< len-1; i++){
        for (int j = 0; j < len-1-i; j++){
            if (heroArray[j].age > heroArray[j+1].age){
                struct Hero temp = heroArray[j];
                heroArray[j] = heroArray[j+1];
                heroArray[j+1] = temp;
            }
        }
    }
}
 
void printHero(struct Hero heroArray[], int len){
    for (int i = 0; i < len; i++){
        cout << heroArray[i].name << heroArray[i].age << heroArray[i].sex << endl; 
    }
}
 
int main(){
 
    struct Hero heroArray[5] = {
        {"刘备", 23 , "男"},
        {"关羽", 22 , "男"},
        {"张飞", 20 , "男"},
        {"赵云", 21 , "男"},
        {"貂蝉", 19 , "女"}
    };
    int len = sizeof(heroArray)/ sizeof(heroArray[0]);
    // 冒泡排序 按照年龄升序
    // ----------------------  传入的是数组，也就是地址传递而不是值传递啦！ ----------------
    bubbleSort(heroArray, len);
    // 打印
    printHero(heroArray, len);
    
 
    return 0;
}