#include<stdio.h>
#include<string.h>
struct exc
{
    int num;
    char name[10];
    char job[10];
    union
    {
        int banji;
        char position[10];
    }a;
}per[6];
struct exc exe(struct exc x)
{
    printf("请输入编号:\n");
    scanf("%d",&x.num);
    printf("请输入姓名:\n");
    scanf("%s",x.name);
    getchar();
    printf("请输入职业:\n");
    scanf("%s",x.job);
    getchar();
    if(strcmp(x.job,"t")==0)
    {
        printf("请输入职务:\n");
        scanf("%s",x.a.position);
        getchar();
    }
    else if(strcmp(x.job,"s")==0)
    {
        printf("请输入班级:\n");
        scanf("%d",&x.a.banji);
        getchar();
    }
    return x;
}
int main(void)
{
    struct exc a[10];
    int p,i;
    for(i=0,p=0;i<6;i++,p++)
    {
        a[p]=exe(per[i]);
    }
    printf("编号\t姓名\t身份\t职位or班级\n");
    for(p=0;p<6;p++)
    {
        if(strcmp(a[p].job,"s")==0)
        {
            printf("%4d\t%s\t%s\t%d\n",a[p].num,a[p].name,a[p].job,a[p].a.banji);
        }
        else if(strcmp(a[p].job,"t")==0)
        {
            printf("%4d\t%s\t%s\t%s\n",a[p].num,a[p].name,a[p].job,a[p].a.position);
        }
    }
}这样行
#include<stdio.h>
#include<string.h>
struct exc
{
    int num;
    char *name;
    char *job;
    union
    {
        int banji;
        char position[10];
    }a;
}per[6];
struct exc exe(struct exc x)
{
    printf("请输入编号:\n");
    scanf("%d",&x.num);
    printf("请输入姓名:\n");
    scanf("%s",x.name);
    getchar();
    printf("请输入职业:\n");
    scanf("%s",x.job);
    getchar();
    if(strcmp(x.job,"t")==0)
    {
        printf("请输入职务:\n");
        scanf("%s",x.a.position);
        getchar();
    }
    else if(strcmp(x.job,"s")==0)
    {
        printf("请输入班级:\n");
        scanf("%d",&x.a.banji);
        getchar();
    }
    return x;
}
int main(void)
{
    struct exc a[10];
    int p,i;
    for(i=0,p=0;i<6;i++,p++)
    {
        a[p]=exe(per[i]);
    }
    printf("编号\t姓名\t身份\t职位or班级\n");
    for(p=0;p<6;p++)
    {
        if(strcmp(a[p].job,"s")==0)
        {
            printf("%4d\t%s\t%s\t%d\n",a[p].num,a[p].name,a[p].job,a[p].a.banji);
        }
        else if(strcmp(a[p].job,"t")==0)
        {
            printf("%4d\t%s\t%s\t%s\n",a[p].num,a[p].name,a[p].job,a[p].a.position);
        }
    }
}换成指针为什么就运行不了了。求解

求教

    char name[10]; 定义了10字节空间
    char job[10];

    char *name; 只声明了一个指针，没定义指向的空间
    char *job;