cyj.cpp

自己写的一个学校人事管理系统,好用的,用VC++编写的.运行通过的

#include<stdio.h>
 #include<stdlib.h>
  #include<malloc.h>
   #include<string.h>
    #include<math.h>
     #define LEN sizeof(struct student)
struct student
{
 long num;
  char name[20];
   float Chinese;
    float Math;
     float English;
 struct student *next;
};
 int n;
  struct student *creat(void)
{
 struct student *head;
  struct student *p1,*p2;
    n=0;
     p1=p2=(struct student *)malloc(LEN);
      printf("请输入学号:");
 scanf("%ld",&p1->num);
 while(p1->num<=0)
{  
 printf("输入的学号应大于0，请重输：\n");
   getchar();
 scanf("%ld",&p1->num);
}
 printf("请输入姓名:");
    scanf("%s",p1->name);
      printf("请输入语文成绩:");
 scanf("%f",&p1->Chinese);
 while(p1->Chinese>100||p1->Chinese<0)
{  
 printf("请输入0～100的数字\n");
       printf("重输语文成绩:");
 scanf("%f",&p1->Chinese);
}
 printf("请输入数学成绩:");
 scanf("%f",&p1->Math);
while(p1->Math>100||p1->Math<0)
{  
 printf("请输入0～100的数字\n");
     printf("重输数学成绩:");
 scanf("%f\n",&p1->Math);
}
 printf("请输入英语成绩:");
 scanf("%f",&p1->English);
 while(p1->English>100||p1->English<0)
{  
 printf("请输入0～100的数字\n");
 printf("重输英语成绩:");
 scanf("%f",&p1->English);
}
 head=NULL;
 while(p1->num!=0)
{ 
 n=n+1;
 if(n==1)head=p1;
 else p2->next=p1;
      p2=p1;
      p1=(struct student *)malloc(LEN);
 printf("请输入学生学号:");
 printf("请输入-1退出成绩输入");
 scanf("%ld",&p1->num);
 if(p1->num==-1)break;
  while(p1->num<=0)
{  
 printf("输入的学号应大于0，请重输：\n");
 getchar();
 scanf("%ld",&p1->num);
} 
 printf("请输入姓名:");
 scanf("%s",p1->name);
 scanf("%f",&p1->Chinese);
 while(p1->Chinese>100||p1->Chinese<0)
{ 
 printf("请输入0～100的数字\n");
 getchar();
 printf("重输语文成绩:");
 scanf("%f",&p1->Chinese);
}
 printf("请输入数学成绩:");
 scanf("%f",&p1->Math);
 while(p1->Math>100||p1->Math<0)
{  
 printf("请输入0~100的数字\n");
 getchar();
 printf("重输数学成绩:");
 scanf("%f",&p1->Math);
}
 printf("请输入英语成绩:");
 scanf("%f",&p1->English);
 while(p1->English>100||p1->English<0)
{  
 printf("请输入0～100的数字\n");
 getchar();
 printf("重输英语成绩:");
 scanf("%f",&p1->English);
}
}
 p2->next=NULL;
 return(head);
}


/*查询成绩*/

void xin(struct student *head,char name[20])
{struct student *p1;
p1=head;
if(head!=NULL)
while(p1!=NULL)
{if(strcmp(p1->name,name)!=0)  
{p1=p1->next;
}
else
{printf("\t_______________________________________\n");
 printf("\t| 学号 |姓名  |语文   |数学   |英语   |\n");
 printf("\t_______________________________________\n");
 printf("\t| %-ld    |%-6.2s|%-7.1f|%-7.1f|%-7.1f|\n",p1->num,p1->name,p1->Chinese,p1->Math,p1->English);break;}}
 printf("\t_______________________________________\n");
if(p1==NULL) printf("\t%s 不存在",name);
}
/*输出*/

void print(struct student *head)
{
 struct student *p;
 printf("\n\tNOW These %d records are:\n",n);
 printf("\t_______________________________________\n");
 printf("\t| 学号 |姓名  |语文   |数学   |英语   |\n");
 printf("\t_______________________________________\n");
 p=head;
if(head!=NULL)
do 
{
 printf("\t| %-ld    |%-6.2s|%-7.1f|%-7.1f|%-7.1f|\n",p->num,p->name,p->Chinese,p->Math,p->English);
 printf("\t_______________________________________\n");
 p=p->next;
}while(p!=NULL);
 return;
}



/*按学号排序*/
struct student *xuehao(struct student *head)
{
 struct student *p2,*p1;
 char n[20];
 long k;
 float m;
 float yingyu;
 float y;
 p1=head;
while(p1!=NULL)
{
 p2=p1->next;
while(p2!=NULL)
{
 if(p1->num>p2->num)
 {
  k=p1->num;p1->num=p2->num;p2->num=k;m=p1->Math;p1->Math=p2->Math;p2->Math=m;
  strcpy(n,p1->name);strcpy(p1->name,p2->name);strcpy(p2->name,n);
  y=p1->Chinese;p1->Chinese=p2->Chinese;p2->Chinese=y;
  yingyu=p1->English;p1->English=p2->English;p2->English=yingyu;
 } 
 p2=p2->next;
}
 p1=p1->next;
}

 return(head);
}


/*按英语排序*/
struct student *yingyu(struct student *head)
{
 struct student *p2,*p1;
 char n[20];
 float k;
 float y;
 long s;
 float m;
 p1=head;
while(p1!=NULL)
{
 p2=p1->next;
while(p2!=NULL)
{
 if(p1->English>p2->English)
 {
  k=p1->English;p1->English=p2->English;p2->English=k;
  m=p1->Math;p1->Math=p2->Math;p2->Math=m;
  strcpy(n,p1->name);strcpy(p1->name,p2->name);strcpy(p2->name,n);
  y=p1->Chinese;p1->Chinese=p2->Chinese;p2->Chinese=y;
  s=p1->num;p1->num=p2->num;p2->num=s;
 }
 p2=p2->next;
}
 p1=p1->next;
}

return(head);
}
/*按数学排序*/
struct student *Math(struct student *head)
{
 struct student *p2,*p1;
 char n[20];
 float y;
 long s;
 float m;
 float k;
 p1=head;
while(p1!=NULL)
{
 p2=p1->next;
while(p2!=NULL)
{
 if(p1->Math>p2->Math)
   {k=p1->Math;p1->Math=p2->Math;p2->Math=k;
   m=p1->English;p1->English=p2->English;p2->English=m;
   strcpy(n,p1->name);strcpy(p1->name,p2->name);strcpy(p2->name,n);
   y=p1->Chinese;p1->Chinese=p2->Chinese;p2->Chinese=y;
   s=p1->num;p1->num=p2->num;p2->num=s;}
 p2=p2->next;
}
 p1=p1->next;
}
 return(head);
}

/*按语文排序*/
struct student *Chinese(struct student *head)
{
 struct student *p2,*p1;
 char n[20];
 float y;
 long s;
 float m;
 float k;
 p1=head;
 while(p1!=NULL)
{
 p2=p1->next;
 while(p2!=NULL)
{
 if(p1->Chinese>p2->Chinese)
   {k=p1->Chinese;p1->Chinese=p2->Chinese;p2->Chinese=k;
   m=p1->English;p1->English=p2->English;p2->English=m;
   strcpy(n,p1->name);strcpy(p1->name,p2->name);strcpy(p2->name,n);
   y=p1->Math;p1->Math=p2->Math;p2->Math=y;
   s=p1->num;p1->num=p2->num;p2->num=s;}
 p2=p2->next;
}
 p1=p1->next;
}

 return(head);
}


/*彩票*/
void caipiao()
{int  m,i,j,n,a[1000][7];
int rand(void);
printf("请输入你想购买的彩票组数:");
scanf("%d",&n);
printf("您的%d组彩票号码如下:\n",n);
{for(i=0;i<n;i++)
for(j=0;j<7;j++)
{m=rand()%50;
if(m>0&&m<=49)
a[i][j]=m;
else j--;}
}
for (i=0;i<n;i++)
{for(j=0;j<7;j++)
if(j!=6)
printf("%5d",a[i][j]);
else printf("\t+%d",a[i][6]);
printf("\n");
}
}
  /*计算器*/
   
void jisuanqi()
{int result,s;
int chengfa();
int jiafa();
int kaifang();
printf("欢迎使用计算器 1.加法\t2.乘法\t3.开方\n");
 printf("\t请选择你要的操作:");
    scanf("%d",&s);
    while(s>3||s<0)
	   {printf("\t请输入1~~3的数字:");
	scanf("%d",&s);}
	switch(s)
	{case 1:
	result=jiafa();printf("%d",result);break;
	case 2:
  result=chengfa();printf("%d",result);break;
	case 3:
  result=kaifang();printf("%d",result);break;

}}
	
/*作加法*/
int jiafa()
{int a[20];
 int i,n;
 int s=0;
 printf("请输入n个要运用加法的数字\n");
 scanf("%d",&n);
 printf("输入数字:每个数字间用空格!\n");
 for(i=0;i<n;i++)
 scanf("%d",&a[i]);
 for(i=0;i<n;i++)
 s=s+a[i];
return(s);
}
/*作乘法*/
int chengfa()
{int a[20];
int i,n;
int s=1;
printf("请输入n个要运用乘法的数字个数:");
scanf("%d",&n);
printf("输入数字:每个数字间用空格!\n");
for(i=0;i<n;i++)
scanf("%d",&a[i]);
for(i=0;i<n;i++)
	s=s*a[i];
return(s);
}
/*作开方*/
int  kaifang()
{int s;
int n;
 printf("输入一个数字:\n");
scanf("%d",&n);
s=sqrt(n);
return(s);
}

/*主函数*/
void main()
{
 struct student *head;
 int i,j,m,p;
 char name[20];
 j=1;
while(j)
{printf("\n");
for(i=0;i<40;i++)
 printf("★");
 printf("\t\t\t  欢迎使用学生成绩管理系统系统\n");
 printf("\t\t\t      开发者：项和平 学号2\n");
 printf("\n\n");
 printf("\t\t     1.成绩输入   2.计算器    3.六合彩 \n");
 printf("\t\t     4.成绩列表   5.成绩排序  6.成绩查询 \n");
 printf("\t\t     7.退出系统   \n");
 printf("\n");
for(i=0;i<40;i++)
 printf("★");
    printf("\n");
    printf("\t\t请选择你要的操作(1～7):");
    scanf("%d",&m);
    while(m>7||m<0)
	   {printf("\t请输入1～7的数字:");
        scanf("%d",&m);}

switch(m)

{case 1: 
	    head=creat();break;
 case 2:jisuanqi();break;
 case 3:caipiao();break;
 case 4: 
		printf("\t成绩列表:");
		print(head);break;
 case 5: 
        printf("\t1.学号 \t2.数学 \t3.英语 \t4.语文 \n");
        printf("\t请输入排序方式(输入1～4数字):");
        scanf("%d",&p);
		if(p<1||p>4)
          {printf("\t请输入1～4的数字:");
           scanf("%d",&p);}
        switch(p)
		{case 1:xuehao(head);
		     print(head);break;
         case 2:Math(head);
			 print(head);break;
         case 3:yingyu(head);
			print(head);break;
         case 4:Chinese(head);
			print(head);break;
        }break;
 
 case 6: 
	   printf("\t请输入要查询的学生的名字:");
        scanf("%s",name);
		xin(head,name);break;
 case 7:
		printf("\t谢谢使用本人的管理系统!");
		printf("本系统由计算机023-项和平编写.");
		getchar();
		exit(0);
		break;}
}

}