1. 定义学生信息的栈数据结构 （包括 学号 姓名 成绩） 2. 设计栈的初始化、入栈、出栈等功能函数，实现学生信息的依次入栈与出栈 3. 编写程序主函数，对各个功能函数进行调用 4. 物理存储结构不限，顺序存储或者链式存储均可

1. 学生信息栈数据结构定义：

struct Student {
    int id;
    char name[20];
    float score;
};

struct Stack {
    int top;
    int size;
    struct Student data[MAX_SIZE];
};

2. 栈的初始化、入栈、出栈等功能函数的设计：

void initStack(struct Stack *stack) {
    stack->top = -1;
    stack->size = 0;
}

void push(struct Stack *stack, struct Student s) {
    if (stack->size == MAX_SIZE) {
        printf("Stack is full!");
        return;
    }
    stack->top++;
    stack->data[stack->top] = s;
    stack->size++;
}

struct Student pop(struct Stack *stack) {
    if (stack->size == 0) {
        printf("Stack is empty!");
        return;
    }
    struct Student s = stack->data[stack->top];
    stack->top--;
    stack->size--;
    return s;
}

struct Student peek(struct Stack *stack) {
    if (stack->size == 0) {
        printf("Stack is empty!");
        return;
    }
    return stack->data[stack->top];
}

void displayStack(struct Stack *stack) {
    if (stack->size == 0) {
        printf("Stack is empty!");
        return;
    }
    printf("[top]\n");
    for (int i = stack->top; i >= 0; i--) {
        printf("[%d] %s %.2f\n", stack->data[i].id, stack->data[i].name, stack->data[i].score);
    }
}

3. 程序主函数调用各个功能函数：

int main() {
    struct Stack stack;
    initStack(&stack);

    struct Student s1 = { 101, "Tom", 87.5 };
    struct Student s2 = { 102, "Jerry", 92.0 };
    struct Student s3 = { 103, "Mimi", 78.5 };

    push(&stack, s1);
    push(&stack, s2);
    push(&stack, s3);

    displayStack(&stack);

    struct Student s = pop(&stack);
    printf("Pop student: %d %s %.2f\n", s.id, s.name, s.score);

    struct Student s4 = { 104, "Lucy", 90.0 };
    push(&stack, s4);

    displayStack(&stack);

    return 0;
}

4. 物理存储结构可使用数组或链表实现。