C语言编程有3个学生的信息，放在结构体数组中，要求输出全部学生的信息 {{10101,"Li Lin",'M',18},{10102,"Zhang Fun",'M',19},{10104,"Wang Min",'F',20}}。

可以使用以下代码实现：

#include <stdio.h>

struct student {
    int id;
    char name[20];
    char gender;
    int age;
};

int main() {
    struct student stu_arr[] = {
        {10101, "Li Lin", 'M', 18},
        {10102, "Zhang Fun", 'M', 19},
        {10104, "Wang Min", 'F', 20}
    };
    int len = sizeof(stu_arr) / sizeof(struct student);
    
    for (int i = 0; i < len; i++) {
        printf("{%d, %s, %c, %d}\n", stu_arr[i].id, stu_arr[i].name, stu_arr[i].gender, stu_arr[i].age);
    }
    
    return 0;
}

输出结果为：

{10101, Li Lin, M, 18}
{10102, Zhang Fun, M, 19}
{10104, Wang Min, F, 20}