如何在C程序文件中比较字符串结构数组

#include <stdio.h>
#include <string.h>

typedef struct {
    char name[50];
    int age;
} Person;

int comparePerson(const void* a, const void* b) {
    Person* personA = (Person*)a;
    Person* personB = (Person*)b;
    return strcmp(personA->name, personB->name);
}

int main() {
    Person people[3];
    strcpy(people[0].name, "Alice");
    people[0].age = 25;
    strcpy(people[1].name, "Bob");
    people[1].age = 30;
    strcpy(people[2].name, "Charlie");
    people[2].age = 20;

    qsort(people, 3, sizeof(Person), comparePerson);

    for (int i = 0; i < 3; i++) {
        printf("Name: %s, Age: %d\n", people[i].name, people[i].age);
    }

    return 0;
}