c语言设有若干个人员的数据，其中有学生和教师。学生的数据中包括：姓名、号码、性别、职业、班级。教师的数据包括：姓名、号码、性别、职业、职务。要求输入人员的数据，然后再输出

以下是一个简单的 C 语言程序，可以实现输入人员数据并输出：

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

#define MAX_NAME_LEN 20
#define MAX_ID_LEN 10
#define MAX_OCCUPATION_LEN 20
#define MAX_TITLE_LEN 20
#define MAX_CLASS_LEN 10

typedef enum { STUDENT, TEACHER } PersonType;

typedef struct {
    char name[MAX_NAME_LEN];
    char id[MAX_ID_LEN];
    char gender;
    char occupation[MAX_OCCUPATION_LEN];
    char class[MAX_CLASS_LEN];
} Student;

typedef struct {
    char name[MAX_NAME_LEN];
    char id[MAX_ID_LEN];
    char gender;
    char occupation[MAX_OCCUPATION_LEN];
    char title[MAX_TITLE_LEN];
} Teacher;

void input_student(Student *s) {
    printf("Please input student name: ");
    scanf("%s", s->name);
    printf("Please input student ID: ");
    scanf("%s", s->id);
    printf("Please input student gender (M/F): ");
    scanf(" %c", &s->gender);
    printf("Please input student occupation: ");
    scanf("%s", s->occupation);
    printf("Please input student class: ");
    scanf("%s", s->class);
}

void input_teacher(Teacher *t) {
    printf("Please input teacher name: ");
    scanf("%s", t->name);
    printf("Please input teacher ID: ");
    scanf("%s", t->id);
    printf("Please input teacher gender (M/F): ");
    scanf(" %c", &t->gender);
    printf("Please input teacher occupation: ");
    scanf("%s", t->occupation);
    printf("Please input teacher title: ");
    scanf("%s", t->title);
}

void print_student(Student s) {
    printf("Student name: %s\n", s.name);
    printf("Student ID: %s\n", s.id);
    printf("Student gender: %c\n", s.gender);
    printf("Student occupation: %s\n", s.occupation);
    printf("Student class: %s\n", s.class);
}

void print_teacher(Teacher t) {
    printf("Teacher name: %s\n", t.name);
    printf("Teacher ID: %s\n", t.id);
    printf("Teacher gender: %c\n", t.gender);
    printf("Teacher occupation: %s\n", t.occupation);
    printf("Teacher title: %s\n", t.title);
}

int main() {
    int num_students, num_teachers;
    printf("Please input the number of students: ");
    scanf("%d", &num_students);
    printf("Please input the number of teachers: ");
    scanf("%d", &num_teachers);

    Student *students = malloc(num_students * sizeof(Student));
    Teacher *teachers = malloc(num_teachers * sizeof(Teacher));

    for (int i = 0; i < num_students; i++) {
        printf("Input data for student %d:\n", i+1);
        input_student(&students[i]);
    }

    for (int i = 0; i < num_teachers; i++) {
        printf("Input data for teacher %d:\n", i+1);
        input_teacher(&teachers[i]);
    }

    printf("Data for all students:\n");
    for (int i = 0; i < num_students; i++) {
        print_student(students[i]);
        printf("\n");
    }

    printf("Data for all teachers:\n");
    for (int i = 0; i < num_teachers; i++) {
        print_teacher(teachers[i]);
        printf("\n");
    }

    free(students);
    free(teachers);
    return 0;
}

这个程序使用了结构体来保存学生和教师的数据，同时定义了两个函数 `input_student()` 和 `input_teacher()` 来分别输入学生和教师的数据，另外还定义了两个函数 `print_student()` 和 `print_teacher()` 来分别输出学生和教师的数据。在 `main()` 函数中，先输入学生和教师的数量，然后根据数量动态分配内存空间，接着依次输入每个学生和教师的数据，并分别输出全部学生和教师的数据。最后释放动态分配的内存空间。