本文实例为大家分享了C语言学生成绩管理系统的具体代码,供大家参考,具体内容如下
Ps:后加了个链表排序,用冒泡写的。
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/*
Title : Student's score management system
Author: nyist_xiaod
Date : 2012.5.8
*/
#include <stdio.h>
#include <conio.h>
#include <string.h>
#include <stdlib.h>
#define Print_Head_Num puts("班级 姓名 语文 数学 英语 总成绩")
#define Print_Head_Cla puts("学号 姓名 语文 数学 英语 总成绩")
#define Print_Head_All puts("班级 学号 姓名 语文 数学 英语 总成绩")
typedef struct Node Node;
struct Score
{
int chinese,math,english,sum;
};
struct Node
{
char name[20],classs[20],number[20];
struct Score score;
struct Node* next;
}*head,*u,*p,*q;
int n,C,M,E,Cj,Cy,Mj,My,Ej,Ey;
char num[20];
void Welcome()
{
printf ( "\t\t %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c\n" ,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4);
printf ( "\t\t %c 欢迎您使用学生成绩管理系统 %c\n" ,4,4);
printf ( "\t\t %c %c\n" ,4,4);
printf ( "\t\t %c 1.读取文件 %c\n" ,4,4);
printf ( "\t\t %c %c\n" ,4,4);
printf ( "\t\t %c 2.保存文件 %c\n" ,4,4);
printf ( "\t\t %c %c\n" ,4,4);
printf ( "\t\t %c 3.添加学生成绩 %c\n" ,4,4);
printf ( "\t\t %c %c\n" ,4,4);
printf ( "\t\t %c 4.修改学生成绩 %c\n" ,4,4);
printf ( "\t\t %c %c\n" ,4,4);
printf ( "\t\t %c 5.删除学生成绩 %c\n" ,4,4);
printf ( "\t\t %c %c\n" ,4,4);
printf ( "\t\t %c 6.查询本人成绩 %c\n" ,4,4);
printf ( "\t\t %c %c\n" ,4,4);
printf ( "\t\t %c 7.查询本班成绩 %c\n" ,4,4);
printf ( "\t\t %c %c\n" ,4,4);
printf ( "\t\t %c 8.查询全校成绩 %c\n" ,4,4);
printf ( "\t\t %c %c\n" ,4,4);
printf ( "\t\t %c 9.退出管理系统 %c\n" ,4,4);
printf ( "\t\t %c %c\n" ,4,4);
printf ( "\t\t %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c\n\n" ,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4);
printf ( "\t\t 请输入指令:(1-9) " );
}
Node* new_node(Node* uu)
{
uu = (Node*) malloc ( sizeof (Node));
uu->next = NULL;
return uu;
}
void Add()
{
u = new_node(u);
printf ( "\n请输入您要加入的学生的信息:\n" );
printf ( "\n姓名: " );
scanf ( "%s" ,u->name);
printf ( "\n班级: " );
scanf ( "%s" ,u->classs);
printf ( "\n学号: " );
scanf ( "%s" ,u->number);
printf ( "\n语文、数学、英语成绩: " );
scanf ( "%d%d%d" ,&u->score.chinese,&u->score.math,&u->score.english);
u->score.sum = u->score.chinese + u->score.math + u->score.english;
u->next = head->next;
head->next = u;
printf ( "\n--->添加成功!\n" );
}
void Mod()
{
n = 0;
printf ( "\n请输入您要修改的学号: " );
scanf ( "%s" ,num);
for (u = head; u != NULL;u = u->next)
{
if ( strcmp (u->number,num) == 0)
{
n = 1;
printf ( "\n请输入新的语文、数学、英语成绩: " );
scanf ( "%d%d%d" ,&u->score.chinese,&u->score.math,&u->score.english);
u->score.sum = u->score.chinese + u->score.math + u->score.english;
printf ( "\n--->修改成功!\n" );
break ;
}
}
if (!n)
printf ( "\n--->没有这个学生的信息!\n" );
}
void Del()
{
n = 0;
printf ( "\n请输入您要删除的学生的学号: " );
scanf ( "%s" ,num);
for (u = head; u != NULL;u = u->next)
{
if ( strcmp (u->number,num) == 0)
{
n = 1;
p->next = u->next;
free (u);
printf ( "\n--->删除成功!\n" );
break ;
}
p = u;
}
if (!n)
printf ( "\n--->没有这个学生的信息!\n" );
}
void Sort()
{
int i,j;
n = 0;
for (u = head->next; u != NULL;u = u->next)
n++;
for (i=1;i<=n;i++)
{
u = head;
for (j=0;j<n-i;j++)
{
p = u->next;
q = p->next;
if ( strcmp (p->classs,q->classs) > 0 || strcmp (p->classs,q->classs) == 0 && p->score.sum < q->score.sum)
{
u->next = q;
p->next = q->next;
q->next = p;
}
u = u->next;
}
}
}
void Que_One()
{
n = 0;
printf ( "\n请输入您要查询的学生的学号: " );
scanf ( "%s" ,num);
for (u = head->next; u != NULL;u = u->next)
{
if ( strcmp (u->number,num) == 0)
{
n = 1;
printf ( "\n" );
Print_Head_Num;
printf ( "%-11s%-15s" ,u->classs,u->name);
printf ( "%-6d%-6d%-6d%-6d\n" ,u->score.chinese,u->score.math,u->score.english,u->score.sum);
break ;
}
}
if (!n)
printf ( "\n--->没有这个学生的信息!\n" );
}
void Analyze_Sco(Node *uu)
{
C += uu->score.chinese;
M += uu->score.math;
E += uu->score.english;
if (uu->score.chinese >= 60)
Cj++;
if (uu->score.chinese >= 90)
Cy++;
if (uu->score.math >= 60)
Mj++;
if (uu->score.math >= 90)
My++;
if (uu->score.english >= 60)
Ej++;
if (uu->score.english >= 90)
Ey++;
}
void Print_Sco()
{
printf ( "语文平均成绩: %-6.2f, 及格率: %%%-6.2f , 优秀率: %%%-6.2f.\n\n" ,( float )C/n,( float )100*Cj/n,( float )100*Cy/n);
printf ( "数学平均成绩: %-6.2f, 及格率: %%%-6.2f , 优秀率: %%%-6.2f.\n\n" ,( float )M/n,( float )100*Mj/n,( float )100*My/n);
printf ( "英语平均成绩: %-6.2f, 及格率: %%%-6.2f , 优秀率: %%%-6.2f.\n\n" ,( float )E/n,( float )100*Ej/n,( float )100*Ey/n);
}
void Que_Cla()
{
Sort();
n = C = M = E = Cj = Cy = Mj = My = Ej = Ey = 0;
printf ( "\n请输入您要查询的班级: " );
scanf ( "%s" ,num);
printf ( "\n" );
for (u = head->next; u != NULL;u = u->next)
{
if ( strcmp (u->classs,num))
continue ;
if (!n)
Print_Head_Cla;
n++;
printf ( "%-11s%-15s" ,u->number,u->name);
printf ( "%-6d%-6d%-6d%-d\n" ,u->score.chinese,u->score.math,u->score.english,u->score.sum);
Analyze_Sco(u);
}
if (!n)
{
printf ( "没有这个班级的学生信息!\n" );
return ;
}
printf ( "\n该班共有学生 %d 人.\n\n" ,n);
Print_Sco();
}
void Que_All()
{
Sort();
n = C = M = E = Cj = Cy = Mj = My = Ej = Ey = 0;
printf ( "\n" );
if (head->next == NULL)
{
printf ( "--->没有学生信息!\n" );
return ;
}
Print_Head_All;
for (u = head->next; u != NULL;u = u->next)
{
n++;
printf ( "%-12s%-12s%-15s" ,u->classs,u->number,u->name);
printf ( "%-6d%-6d%-6d%-d\n" ,u->score.chinese,u->score.math,u->score.english,u->score.sum);
Analyze_Sco(u);
}
printf ( "\n全校共有学生 %d 人.\n\n" ,n);
Print_Sco();
}
void Save()
{
char c;
printf ( "\n确认保存?(Y/N): " );
scanf ( "%*c%c" ,&c);
if (c == 'N' )
return ;
FILE *fp;
if ((fp= fopen ( "C:\\data.txt" , "w" ))==NULL)
{
printf ( "\n--->无法打开文件\n" );
return ;
}
fputs ( "班级 学号 姓名 语文 数学 英语 总成绩" ,fp);
if (head->next != NULL)
fputs ( "\n" ,fp);
for (u = head->next; u != NULL;u = u->next)
{
fprintf (fp, "%-11s%-11s%-15s" ,u->classs,u->number,u->name);
fprintf (fp, "%-6d%-6d%-6d%-d" ,u->score.chinese,u->score.math,u->score.english,u->score.sum);
if (u->next != NULL)
fprintf (fp, "\n" );
}
fclose (fp);
printf ( "\n--->成绩成功存入C:\\\\data.txt中\n" );
}
void Open()
{
printf ( "\n请把数据放到目录C:\\\\data.txt中,按任意键确认.\n" );
getch();
FILE *fp;
if ((fp= fopen ( "C:\\data.txt" , "r" ))==NULL)
{
printf ( "\n--->没有找到文件!\n" );
return ;
}
char tmp[100];
fgets (tmp,66,fp);
while (! feof (fp))
{
u = new_node(u);
fscanf (fp, "%s%s%s" ,u->classs,u->number,u->name);
fscanf (fp, "%d%d%d%d" ,&u->score.chinese,&u->score.math,&u->score.english,&u->score.sum);
u->next = head->next;
head->next = u;
}
printf ( "\n--->成绩读入成功!\n" );
fclose (fp);
}
void Exi()
{
char c;
printf ( "\n确定退出?(Y/N): " );
scanf ( "%*c%c" ,&c);
if (c == 'N' )
return ;
system ( "cls" );
printf ( "\n\n" );
printf ( "\t\t\t %c %c %c %c %c %c %c %c %c\n" ,4,4,4,4,4,4,4,4,4);
printf ( "\t\t\t %c Made by Xiaod %c\n" ,4,4);
printf ( "\t\t\t %c %c %c %c %c %c %c %c %c\n" ,4,4,4,4,4,4,4,4,4);
printf ( "\t\t\t Thank you!\n\n\n" );
exit (0);
}
int main()
{
int orz;
system ( "color 0B" );
head = new_node(head);
while (1)
{
Welcome();
scanf ( "%d" ,&orz);
system ( "cls" );
switch (orz)
{
case 1:Open(); break ;
case 2:Save(); break ;
case 3:Add(); break ;
case 4:Mod(); break ;
case 5:Del(); break ;
case 6:Que_One(); break ;
case 7:Que_Cla(); break ;
case 8:Que_All(); break ;
case 9:Exi(); break ;
default : printf ( "\n--->无效的指令!\n" );
}
printf ( "\n" );
system ( "pause" );
system ( "cls" );
}
return 0;
}
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以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://blog.csdn.net/dgq8211/article/details/7581403