功能：记录每月的全部收入及各项开支情况，包括食品消费，房租，子女教育费用，水电费，医疗费，储蓄等。进入系统后可以输入和修改某月的收支情况，可以对每月的开支从小到大进行排序，可以根据输入的月份查询每月的收支情况。
包括5个月的收支情况，能对信息进行扩充，修改和删除，完成对每月的开支排序，以及完成系统查询功能

请各位高手指导下，数据结构我学的太差，感觉无从下手

不知道要做成什么样子的
#include <stdio.h>
#include <stdlib.h>

#define LEN  sizeof( struct LNode )

typedef struct LNode
{
    int food;//食品费用
    int house;//房租费用
    int education;//教育费用
    int charge;//水电费用
    int healthy;//医疗费用
    int in;//收入
    int sum;//总的消费
    int month;//月份
    struct LNode *next;
}*SqList;

//1创建空链表
void Creat_List( SqList &L )
{
    L = (SqList) malloc (LEN);
    if( !L )
        exit(0);
    L->next = NULL;
    printf("信息初始化成功!\n");
}
//2插入链表元素
void Insert_List( SqList &L )
{
    SqList q;
    q = (SqList) malloc (LEN);
    if( !q )
        exit(0);
    printf("输入你要记入的月份:");
    scanf("%d", &q->month);
    printf("输入本月食品费用:");
    scanf("%d",&q->food );
    printf("输入本月房租费用:");
    scanf("%d",&q->house);
    printf("输入本月教育费用:");
    scanf("%d",&q->education);
    printf("输入本月水电费用:");
    scanf("%d",&q->charge );
    printf("输入本月医疗费用:");
    scanf("%d",&q->healthy );
    printf("输入本月收入:");
    scanf("%d",&q->in);
    q->sum = q->food + q->house + q->education +
        q->charge + q->healthy;
    q->next = L->next;
    L->next = q;
}
//3删除链表结点
void Delete_List( SqList &L )
{
    SqList p = L;
    int mon;
    printf("输入要删除信息的月份:");
    scanf("%d", &mon );
    while( p->next )
    {
        if( p->next->month == mon )
        {
            p->next = p->next->next;
            printf("删除成功!\n");
            break;
        }
        p = p->next;
    }
}
//4输出全部信息
void Output_List( SqList L )
{
    SqList p = L->next;
    while( p )
    {
        printf("%d 月份:\n", p->month );
        printf("本月食品费用: %d\n", p->food );
        printf("本月房租费用: %d\n", p->house );
        printf("本月教育费用: %d\n", p->education );
        printf("本月水电费用: %d\n", p->charge );
        printf("本月医疗费用: %d\n", p->healthy );
        printf("本月收入: %d\n", p->in );
        printf("本月总费用: %d\n", p->sum );
        p = p->next;
    }
}
//5链表排序依消费从少到多
void Arrang_List( SqList L )
{
    if( !L->next )
        return;
    SqList p, rear, front, temp;
    front = L;
    p = L->next;
    rear = p->next;
    while( rear )
    {
        if( p->sum > rear->sum )
        {
            front->next = p->next;
            temp = p->next;
            p->next = rear->next;
            rear->next = temp;
            temp = rear;
            rear = p;
            p = temp;
        }
        front = front->next;
        p = p->next;
        rear = rear->next;
    }
    Output_List( L );
}
//6查询链表某一结点的信息 并返回值
void Check_List( SqList L, SqList &e )
{
    SqList q = L->next;
    int mon;
    printf("输入要查询或修改信息的月份:");
    scanf("%d", &mon );
    while(q)
    {
        if( q->month == mon )
        {
            e = q;
            break;
        }
        q = q->next;
    }
    if( !q )
    {
        printf("表中不存在当前要查找或修改的信息!\n");
        e = NULL;
    }
}
//7修改链表结点的信息
void Change_List( SqList &L )
{
    SqList e = (SqList) malloc (LEN);
    Check_List( L, e );
    if( !e )
        return;//想要修改的结点不存在
    printf("修改本月食品费用:");
    scanf("%d",&e->food );
    printf("修改本月房租费用为:");
    scanf("%d",&e->house );
    printf("修改本月教育费用为:");
    scanf("%d",&e->education );
    printf("修改本月水电费用为:");
    scanf("%d",&e->charge );
    printf("修改本月医疗费用为:");
    scanf("%d",&e->healthy );
    printf("修改本月收入为:");
    scanf("%d",&e->in );
    e->sum = e->food + e->house + e->education +
        e->charge + e->healthy;
    printf("信息修改成功!\n");
}

int main()
{
    SqList L, e;
    int c;
    Creat_List( L );
    while( 1 )
    {
        
        printf("#输入\'1\'增加月份信息#\n");
        printf("#输入\'2\'删除月份信息#\n");
        printf("#输入\'3\'输出所有月份信息#\n");
        printf("#输入\'4\'按消费从少到多输出月份信息#\n");
        printf("#输入\'5\'查询月份信息#\n");
        printf("#输入\'6\'修改月份信息#\n");
        printf("#输入\'7\'退出系统#\n");
        
        scanf("%d", &c);
        getchar();
        switch( c )
        {
        case 1:
            Insert_List( L );
            break;
        case 2:
            Delete_List( L );
            break;
        case 3:
            Output_List( L );
            break;
        case 4:
            Arrang_List( L );
            break;
        case 5:
            Check_List( L, e );
            //printf("%d 月份:\n", q->month );
            if( e )
            {
                printf("本月食品费用: %d\n", e->food );
                printf("本月房租费用: %d\n", e->house );
                printf("本月教育费用: %d\n", e->education );
                printf("本月水电费用: %d\n", e->charge );
                printf("本月医疗费用: %d\n", e->healthy );
                printf("本月收入: %d\n", e->in );
                printf("本月总费用: %d\n", e->sum );
            }
            break;
        case 6:
            Change_List( L );
            break;
        case 7:
            exit(0);
            break;
        }
    }
    return 0;
}
        

非常感谢