text1.c

家庭财务管理系统应用软件给家庭成员提供了一个在Windows操作系统上运行的管理平台

#include<stdio.h>
#include<stdlib.h>
struct student
{ long no;                     /*学号*/
  char name[20];               /*姓名*/
  float chinese_score;          /*语文成绩*/
  float math_score;             /*数学成绩*/
  float english_score;          /*英语成绩*/
  float all_score;              /*总成绩*/
  float average_score;          /*平均成绩*/
  struct student *next;           /*链接到下一个学生*/
}*myhead,*mynew,*mythis;

void creat_student(struct student*h);/*创建链表*/
void print_student(struct student*h);/* 显示全部记录*/ 
void search_student(struct student*h); /*查找记录*/ 
void add_student(struct student*h);/*插入链表*/
void delt_student(struct student*h); /*删除记录*/ 
void renew_student(struct student*h);/*插入记录*/ 
void set_student(struct student*h);/*设置链表*/

void creat() 
{
	myhead=NULL;
	mynew=(struct student*)malloc(sizeof(struct student));
	if(mynew!=NULL)
	{
		printf("Please input name:\n");
		scanf("%s",&mynew->name);
		printf("Please input no:\n");
		scanf("%ld",&mynew->no);
		printf("Please input chinese_score:\n");	
		scanf("%f",&mynew->chinese_score);
		while(1)
		{
			if(sizeof(mynew->chinese_score)!=4||mynew->chinese_score<0||mynew->chinese_score>100)
			{
				printf("Erorr!!\n");
				printf("Please input chinese_score(0~100):\n");
				scanf("%f",&mynew->chinese_score);
			}
			else
				break;
		}
		printf("Please input math_score:\n");
		scanf("%f",&mynew->math_score);
		while(1)
		{
			if(sizeof(mynew->math_score)!=4||mynew->math_score<0||mynew->math_score>100)
			{
				printf("Erorr!!\n");
				printf("Please input math_score(0~100):\n");
				scanf("%f",&mynew->math_score);
			}
			else
				break;
		}
		printf("Please input english_score:\n");
		scanf("%f",&mynew->english_score);
		while(1)
		{
			if(sizeof(mynew->english_score)!=4||mynew->english_score<0||mynew->english_score>100)
			{
				printf("Erorr!!\n");
				printf("Please input english_score(0~100):\n");
				scanf("%f",&mynew->english_score);
			}
			else
				break;
		}
		mynew->all_score=mynew->chinese_score+mynew->math_score+mynew->english_score;
		mynew->average_score=(mynew->chinese_score+mynew->math_score+mynew->english_score)/3;
	}
	while(1)
	{
		if(myhead==NULL)
		{
			myhead=mynew;
			myhead->next=NULL;
		}
		else
		{
			mythis=myhead;
			while(1)
			{
				if((mythis->next)!=NULL)
					mythis=mythis->next;
				else
				{
					mythis->next=mynew;
					mynew->next=NULL;
					break;
				}
			}
		}
		mynew=(struct student*)malloc(sizeof(struct student));
		if(mynew!=NULL)
		{
			printf("Please input name(若无新记录,请输入'#'):\n");
			scanf("%s",&mynew->name);
			if((mynew->name[0])=='#')
			{
				system("cls");
				printf("over!!\n");
				break;
			}
			else
			{
				printf("Please input no:\n");
				scanf("%ld",&mynew->no);
				printf("Please input chinese_score:\n");	
				scanf("%f",&mynew->chinese_score);
				while(1)
				{
					if(sizeof(mynew->chinese_score)!=4||mynew->chinese_score<0||mynew->chinese_score>100)
					{
						printf("Erorr!!\n");
						printf("Please input chinese_score(0~100):\n");
						scanf("%f",&mynew->chinese_score);
					}
					else
						break;
				}
				printf("Please input math_score:\n");
				scanf("%f",&mynew->math_score);
				while(1)
				{
					if(sizeof(mynew->math_score)!=4||mynew->math_score<0||mynew->math_score>100)
					{
						printf("Erorr!!\n");
						printf("Please input math_score(0~100):\n");
						scanf("%f",&mynew->math_score);
					}
					else
						break;
				}
				printf("Please input english_score:\n");
				scanf("%f",&mynew->english_score);
				while(1)
				{
					if(sizeof(mynew->english_score)!=4||mynew->english_score<0||mynew->english_score>100)
					{
						printf("Erorr!!\n");
						printf("Please input english_score(0~100):\n");
						scanf("%f",&mynew->english_score);
					}
					else
						break;
				}
				mynew->all_score=mynew->chinese_score+mynew->math_score+mynew->english_score;
				mynew->average_score=(mynew->chinese_score+mynew->math_score+mynew->english_score)/3;
			}
		}
	}
}
void print() 
{
	struct student *p;
	p=myhead;
	system("cls");
    if(p==NULL)
     	printf("there is no record!");
    else 
	     printf("no name chinese_score math_score english_score all_score average_score\n");
	while(p!=NULL)
	{
		printf("%-10ld %-10s %-8.1f %-9.1f %-8.1f %-11.1f %-8.1f\n",p->no,p->name,                                          
			p->chinese_score,p->math_score,p->english_score,p->all_score,p->average_score);
	    p=p->next;
	}
}
void search() 
{   
	long num;
	mythis=myhead;
	system("cls");
	printf("Please enter no for searching:\n");
	scanf("%ld",&num);
	while(1)
	{
		if((mythis->no)==num)
		{
			printf(" no name chinese_score math_score english_score all_score average_score\n");
			printf("%-10ld %-10s %-8.1f %-9.1f %-8.1f %-11.1f %-8.1f\n",mythis->no,mythis->name,                                          
			     mythis->chinese_score,mythis->math_score,mythis->english_score,mythis->all_score,mythis->average_score);

		       break;
		}
		else 
			if(((mythis->no)!=num)&&(mythis->next)!=NULL)
			{
		       mythis=mythis->next;
			}
		else 
			if((mythis->next)==NULL)
			{
			   printf("There isn't  %ld student on the list\n",num);
			break;
		}
	}
}
void add() 
{
	mynew=(struct student*)malloc(sizeof(struct student));
	if(mynew!=NULL)
	{
		printf("Please input name:\n");
		scanf("%s",&mynew->name);
		printf("Please input no:\n");
		scanf("%ld",&mynew->no);
		printf("Please input chinese_score:\n");	
		scanf("%f",&mynew->chinese_score);
		while(1)
		{
			if(sizeof(mynew->chinese_score)!=4||mynew->chinese_score<0||mynew->chinese_score>100)
			{
				printf("Erorr!!\n");
				printf("Please input chinese_score(0~100):\n");
				scanf("%f",&mynew->chinese_score);
			}
			else
				break;
		}
		printf("Please input math_score:\n");
		scanf("%f",&mynew->math_score);
		while(1)
		{
			if(sizeof(mynew->math_score)!=4||mynew->math_score<0||mynew->math_score>100)
			{
				printf("Erorr!!\n");
				printf("Please input math_score:(0~100):\n");
				scanf("%f",&mynew->math_score);
			}
			else
				break;
		}
		printf("Please input english_score:\n");
		scanf("%f",&mynew->english_score);
		while(1)
		{
			if(sizeof(mynew->english_score)!=4||mynew->english_score<0||mynew->english_score>100)
			{
				printf("Erorr!!\n");
				printf("Please input english_score:(0~100):\n");
				scanf("%ld",&mynew->english_score);
			}
			else
				break;
		}
		mynew->all_score=mynew->chinese_score+mynew->math_score+mynew->english_score;
		mynew->average_score=(mynew->chinese_score+mynew->math_score+mynew->english_score)/3;
		system("cls");
		printf("Success!!\n");
	}
	mythis=myhead;
	while(1)
	{
		if((mythis->next)!=NULL)
			mythis=mythis->next;
		else
		{
			mythis->next=mynew;
			mynew->next=NULL;
			break;
		}
	}
}
void delt() 
{
	long num;
	struct student *p;
	printf("Please enter the no for delet:\n");
	scanf("%ld",&num);
	mythis=myhead;
	system("cls");
	while(1)
	{
		if((myhead->no)==num)
		{
			myhead=myhead->next;
			printf("记录已删除!!\n");
			free(mythis);
			break;
		}
		if((myhead->no)!=num)
		{
			while(1)
			{
				if(((mythis->next)!=NULL)&&((mythis->no)!=num))
				{
					p=mythis;
					mythis=mythis->next;
					continue;
				}
				else if(((mythis->next)==NULL)&&((mythis->no)!=num))
				{
					printf("Not found!!\n");
					break;
				}
				else if(((mythis->no)==num)&&((mythis->next)!=NULL))
				{	
					p->next=mythis->next;
					printf("记录已删除!!\n");
					free(mythis);
					break;
				}
				else if(((mythis->no)==num)&&((mythis->next)==NULL))
				{	
					p->next=NULL;
					printf("记录已删除!!\n");
					free(mythis);
					break;
				}
			}
			break;
		}
	}
}
void renew() 
{   
	long num;
	printf("please input the no to renew:\n");
	scanf("%ld",&num);
	mythis=myhead;
	while(1)
	{
		if(((mythis->no)!=num)&&((mythis->next)!=NULL))
			mythis=mythis->next;
		else if(((mythis->no)!=num)&&((mythis->next)==NULL))
		{
			printf("Not found!!\n");
			break;
		}
		else if((mythis->no)==num)
		{
			printf("Please input new chinese_score:\n");
			scanf("%f",&mythis->chinese_score);
			while(1)
			{
				if(sizeof(mythis->chinese_score)!=4||mythis->chinese_score<0||mythis->chinese_score>100)
				{
					printf("Erorr!!\n");
					printf("Please input new chinese_score(0~100):\n");
					scanf("%f",&mythis->chinese_score);
				}
				else
					break;
			}
			printf("Please input new math_score:\n");
			scanf("%f",&mythis->math_score);
			while(1)
			{
				if(sizeof(mythis->math_score)!=4||mythis->math_score<0||mythis->math_score>100)
				{
					printf("Erorr!!\n");
					printf("Please input new math_score(0~100):\n");
					scanf("%f",&mythis->math_score);
				}
				else
					break;
			}
			printf("Please input new english_score:\n");
			scanf("%f",&mythis->english_score);
			while(1)
			{
				if(sizeof(mythis->english_score)!=4||mythis->english_score<0||mythis->english_score>100)
				{
					printf("Erorr!!\n");
					printf("Please input new english_score(0~100):\n");
					scanf("%f",&mythis->english_score);
				}
				else
					break;
			}