程序代码：

#include<stdio.h>
struct Student
{
    int num;
    char name[20];
    float score[3];
};

void input(struct Student stu[])
{
    int i, j;
    for (i = 0; i < 5; i++)
    {
        printf("Input No.%d student's num and name\n", i + 1);
        scanf_s("%d%s", &stu[i].num, &stu[i].name, 20);
        for (j = 0; j < 3; j++)
        {
            printf("Input No.%d student's No.%d score\n", i + 1, j + 1);
            scanf_s("%f", &stu[i].score[j]);
        }
    }
}

void print(struct Student stu[])
{
    int i, j;
    printf("\nNo.   name           score1      score2      score3\n");
    for (i = 0; i < 5; i++)
    {
        printf("%d %-10s", stu[i].num, stu[i].name);
        for (j = 0; j < 3; j++)
            printf("%10.2f ", stu[i].score[j]);
        printf("\n");
    }
}

int main()
{
    void input(struct Student stu[]);
    void print(struct Student stu[]);
    struct Student stu[5];
    input(stu);
    print(stu);
    return 0;
}