我想将以上实例代码改成用c语言写的代码

好的，以下是用C语言编写的员工管理系统的示例代码：

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

#define MAX_EMPLOYEES 100

typedef struct {
    char name[50];
    int age;
    char position[50];
    float salary;
} Employee;

typedef struct {
    Employee employees[MAX_EMPLOYEES];
    int count;
} EmployeeManagementSystem;

void add_employee(EmployeeManagementSystem *ems, Employee employee) {
    if (ems->count < MAX_EMPLOYEES) {
        ems->employees[ems->count++] = employee;
        printf("Employee added successfully!\n");
    } else {
        printf("Employee database is full!\n");
    }
}

void remove_employee(EmployeeManagementSystem *ems, char *name) {
    int i, index = -1;
    for (i = 0; i < ems->count; i++) {
        if (strcmp(ems->employees[i].name, name) == 0) {
            index = i;
            break;
        }
    }

    if (index != -1) {
        for (i = index; i < ems->count - 1; i++) {
            ems->employees[i] = ems->employees[i + 1];
        }
        ems->count--;
        printf("Employee removed successfully!\n");
    } else {
        printf("Employee not found!\n");
    }
}

void modify_employee_info(EmployeeManagementSystem *ems, char *name, int age, char *position, float salary) {
    int i;
    for (i = 0; i < ems->count; i++) {
        if (strcmp(ems->employees[i].name, name) == 0) {
            ems->employees[i