主函数中录入的数据，副函数不承认，求解疑_(¦3」∠)_

Question

现在要建立一个员工信息系统，假设目前已经录入了5名员工的信息：ID、名字、年龄、性别、工资、是否在职。
对目前所有员工，在职者加工资100元，退休者工资加50元。
我在主函数里录入了这5个人原本的信息，但是为什么后面调用函数repair的时候，它不承认有这5个人的数据呢？？？
网上查了查资料不知道从何查起，也没有得到有用的资料
欢迎各位大佬帮我指点迷津，谢谢！
以下是代码：

#include <stdio.h>
#include <stdlib.h>
#define N 100
#define origin 5
struct xinxi
{
    int ID;
    char name[10];
    int age;
    char sex[4];
    int wage;
    char job[10];
}Xinxi;
void repair()
{
    struct xinxi Xinxi[N];
    int num,i,k;
    char str_2[10]={"在职"};
    num=origin;
    for(i=0;i<num;i++)
    {
        k=strcmp(Xinxi[i].job,str_2);
        if(k=0)
        {
            Xinxi[i].wage=Xinxi[i].wage+100; 
        }
        else
        {
            Xinxi[i].wage=Xinxi[i].wage+50;
        }
    }
    printf("修改后，员工们的工资：\n");
    for(i=0;i<num;i++)
    {
        printf("%s:%d\n",Xinxi[i].name,Xinxi[i].wage);
    }
    printf("修改成功！");
}
int main()
{
    struct xinxi Xinxi[N];
    struct xinxi Xinxi[5]={{1,"小明",20,"男",800,"在职"},{2,"小红",22,"女",750,"在职"},{3,"小白",21,"女",800,"退休"},{4,"小雷",23,"男",900,"在职"},{5,"小黑",22,"男",600,"退休"}};
    void repair();
    return 0;
}

我感觉我哪块区域的知识不是很明白，但我又不知道这块区域的知识究竟是什么_(¦3」∠)_

Answer 1

// 方法1

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

#define ADDSALARY 100
#define STAFFCOUNT   5
typedef struct XINXI
{
    int ID;
    char name[10];
    int age;
    char sex[4];
    int wage;
    char job[10];
}XinXi;

XinXi xinxi[STAFFCOUNT];// 全局的

void repair()
{
    int i, k;
    char str_2[10] = "在职";

    for (i = 0; i<STAFFCOUNT; i++)
    {
        k = strcmp(xinxi[i].job, str_2);
        if (k == 0)
            xinxi[i].wage += 100;
        else
            xinxi[i].wage += 50;
    }
    printf("修改后，员工们的工资：\n");
    for (i = 0; i<STAFFCOUNT; i++)
    {
        printf("%s:%d\n", xinxi[i].name, xinxi[i].wage);
    }
    printf("修改成功！\n");
}
int main()
{
    xinxi[0] = { 1,"小明",20,"男",800,"在职" };
    xinxi[1] = { 2,"小红",22,"女",750,"在职" };
    xinxi[2] = { 3,"小白",21,"女",800,"退休" };
    xinxi[3] = { 4,"小雷",23,"男",900,"在职" };
    xinxi[4] = { 5,"小黑",22,"男",600,"退休" };
    repair();
    return 0;
}

// 方法2

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

// 调薪工资
#define ADDSALARY 100

// 员工数量
#define STAFFCOUNT   5

typedef struct XINXI
{
    int ID;
    char name[10];
    int age;
    char sex[4];
    int wage;
    char job[10];
}XinXi;

void repair(XinXi *xinxi)
{
    int i, k;
    char str_2[10] = "在职";

    for (i = 0; i<STAFFCOUNT; i++)
    {
        k = strcmp(xinxi[i].job, str_2);
        if (k == 0)// 你之前这里写错了，应该是k == 0     不是k = 0
            xinxi[i].wage += ADDSALARY;
        else
            xinxi[i].wage += (ADDSALARY/2);
    }
    printf("修改后，员工们的工资：\n");
    for (i = 0; i<STAFFCOUNT; i++)
    {
        printf("%s:%d\n", xinxi[i].name, xinxi[i].wage);
    }
    printf("修改成功！\n");
}
int main()
{
    XinXi xinxi[STAFFCOUNT]; // 局部的

    xinxi[0] = { 1,"小明",20,"男",800,"在职" };
    xinxi[1] = { 2,"小红",22,"女",750,"在职" };
    xinxi[2] = { 3,"小白",21,"女",800,"退休" };
    xinxi[3] = { 4,"小雷",23,"男",900,"在职" };
    xinxi[4] = { 5,"小黑",22,"男",600,"退休" };

    repair(xinxi);

    return 0;
}