C语言程序设计学生成绩管理系统
#include
#include
#include
typedef struct LNode
{
long no;
char name[10];
int math;
int chinese;
int English;
int total;
struct LNode next;
}LNode;
void ma1in()
{
int i,j,a=1,b=1,c,d;
struct LNode s[100];
FILE fp=NULL;
char ch;
fp=fopen(“D:\student.date”,“w”);/以写的方式打开文件/
if(fpNULL)/判断是否打开成功/
{
printf(“Failure to open student.txt!\n”);
exit(0);
}
for(i=0;b1;i++)/数据的输入/
{
printf(“please input stduent number ID:”);
scanf("%ld",&s[i].no);
printf(“plese input name:”);
//测试代码printf(“111111”);
scanf("%s",s[i].name);
printf(“math:”);
scanf("%d",&s[i].math);
printf(“chinese”);
scanf("%d",&s[i].chinese);
printf(“Engkish:”);
scanf("%d",&s[i].English);
printf(“if thinking continue Please input 1,else other number”);
scanf("%d",&b);
s[i].total=s[i].math+s[i].English+s[i].chinese;
}/致辞位置进行数据输入/
c=i;
printf(" no name[10] math chinese English total\n");/基本框架打印好/
for(i=0;i
{
fprintf(fp,"%10ld %3s %3d %3d %3d %3d",s[i].no,s[i].name,s[i].math,s[i].chinese,s[i].English,s[i].total);
fprintf(fp,"\n");
printf("%10ld %3s %3d %3d %3d %3d",s[i].no,s[i].name,s[i].math,s[i].chinese,s[i].English,s[i].total);
putchar(’\n’);
}
fclose(fp);
}
void ma2in()
{
int n,i=0,j,w;
struct LNode a[100],q;
FILE fp=NULL;
fp=fopen(“D:\student.date”,“r”);/只单单以读的方式打开文件/
if(fpNULL)
{
printf(“Failure to open student.txt!\n”);
exit(0);
}
while(1)/从文件中读取数据到结构体中/
{
fscanf(fp,"%10ld%s%3d%3d%3d%3d\n",&a[i].no,&a[i].name,&a[i].math,&a[i].chinese,&a[i].English,&a[i].total);
i++;
if(feof(fp))
break;
}
w=i;
for(i=0;i
{
for(j=1+i;j
if(a[i].no>a[j].no)
{
q=a[i];
a[i]=a[j];
a[j]=q;
}
}
}
fclose(fp);
fp=fopen(“D:\s_no.date”,“w”);
if(fpNULL)
{
printf(“Failure to open student.txt!\n”);
exit(0);
}
printf(" no name[10] math chinese English total\n");/基本框架打印好/
for(j=0;j
fprintf(fp,"%10ld %3s %3d %3d %3d %3d\n",a[j].no,a[j].name,a[j].math,a[j].chinese,a[j].English,a[j].total);
printf("%ld %s %d %d %d %d\n",a[j].no,a[j].name ,a[j].math ,a[j].chinese,a[j].English,a[j].total);
}
fclose(fp);
}
void ma3in()
{
int i=0, j,w;
LNode a[100],q;
FILE fp;
fp=fopen(“D:\student.date”,“r”);
if(fp==NULL)
{
printf(“Failure to open student.txt!\n”);
exit(0);
}
while(1)
{
fscanf(fp,"%10ld%s%3d%3d%3d%3d\n",&a[i].no,&a[i].name,&a[i].math,&a[i].chinese,&a[i].English,&a[i].total);
i++;
if(feof(fp))
break;
}
w=i;
for (j = 0; j < w; j++)
for (i = 1+j; i < w; i++)
if (strcmp((char)a[j].name, (char
{
q=a[i];
a[i]=a[j];
a[j]=q;
}
fclose(fp);
fp=fopen(“D:\s_name.date”,“w”);
if(fpNULL)
{
printf(“Failure to open s_name.txt!\n”);
exit(0);
}
printf(" no name[10] math chinese English total\n");/基本框架打印好/
for(j=0;j
fprintf(fp,"%10ld %3s %3d %3d %3d %3d\n",a[j].no,a[j].name,a[j].math,a[j].chinese,a[j].English,a[j].total);
printf("%ld %s %d %d %d %d\n",a[j].no,a[j].name ,a[j].math ,a[j].chinese,a[j].English,a[j].total);
}
fclose(fp);
}
void ma4in()
{
int i=0,b=1,w,j;
struct LNode s[100],q;
FILE *fp=NULL;
fp=fopen(“D:\s_no.date”,“r”);
if(fp
{
printf(“Failure to open student.txt!\n”);
exit(0);
}
while(1)
{
fscanf(fp,"%10ld%s%3d%3d%3d%3d\n",&s[i].no,&s[i].name,&s[i].math,&s[i].chinese,&s[i].English,&s[i].total);
i++;
if(feof(fp))
break;
}
fclose(fp);
//测试代码printf(“7777777777777777777777\n”);
for(;b1;i++)
{
printf(“please input stduent number ID:”);
scanf("%ld",&s[i].no);
printf(“plese input name:”);
//测试代码printf(“111111”);
scanf("%s",s[i].name);
printf(“math:”);
scanf("%d",&s[i].math);
printf(“chinese”);
scanf("%d",&s[i].chinese);
printf(“Engkish:”);
scanf("%d",&s[i].English);
printf(“if thinking continue Please input 1,else other number”);/这两行进行了小小的优化可以一次插入多组数据/
scanf("%d",&b);
s[i].total=s[i].math+s[i].English+s[i].chinese;
}/致辞位置进行数据输入/
w=i;
//测试代码printf(“33333333333333333333\n”);
for(i=0;i
for(j=1+i;j
if(s[i].no>s[j].no)
{
q=s[i];
s[i]=s[j];
s[j]=q;
}
}
}
//测试代码printf(“8888888888888888888888888888\n”);
fp=fopen(“D:\s_no.date”,“w”);
if(fp
{
printf(“Failure to open student.txt!\n”);
exit(0);
}
printf(" no name[10] math chinese English total\n");/基本框架打印好/
for(i=0;i
{
fprintf(fp,"%10ld %3s %3d %3d %3d %3d",s[i].no,s[i].name,s[i].math,s[i].chinese,s[i].English,s[i].total);
fprintf(fp,"\n");
printf("%ld %s %d %d %d %d\n",s[i].no,s[i].name ,s[i].math ,s[i].chinese,s[i].English,s[i].total);
}
fclose(fp);
}
void ma5in()
{
long z;
int i=0,b=1,w,j;
struct LNode s[100];
FILE fp=NULL;
fp=fopen(“D:\s_no.date”,“r”);
if(fpNULL)
{
printf(“Failure to open student.txt!\n”);
exit(0);
}
while(1)
{
fscanf(fp,"%10ld%s%3d%3d%3d%3d\n",&s[i].no,&s[i].name,&s[i].math,&s[i].chinese,&s[i].English,&s[i].total);
i++;
if(feof(fp))
break;
}
fclose(fp);
printf(“please input delate stduent number ID:”);
scanf("%ld",&z);
w=i;
for(i=0;i
{
if(s[i].noz)
{
printf(“处于第：%d位数据为[%ld %s %d %d %d %d]\n”,i,s[i].no,s[i].name ,s[i].math ,s[i].chinese,s[i].English,s[i].total);
for(j=i;j
s[j]=s[j+1];
}
–i;/考虑前后代号一样/
–w;
}
}
fp=fopen(“D:\s_no.date”,“w”);
if(fp==NULL)
{
printf(“Failure to open student.txt!\n”);
exit(0);
}
printf(" no name[10] math chinese English total\n");/基本框架打印好/
for(i=0;i
{
fprintf(fp,"%10ld %3s %3d %3d %3d %3d",s[i].no,s[i].name,s[i].math,s[i].chinese,s[i].English,s[i].total);
fprintf(fp,"\n");
printf("%ld %s %d %d %d %d\n",s[i].no,s[i].name ,s[i].math ,s[i].chinese,s[i].English,s[i].total);
}
fclose(fp);
}
void main()
{
int a=1,i,b;
printf("\n菜单一:创建源数据文件\n菜单二:按学号由大到小排序\n菜单三:按姓名排序\n菜单四:插入成绩\n菜单五:删除特定学号\n*******************\n");
for(i=0;a==1;i++)
{
printf(“input your selecte:”);
scanf("%d",&b);
getchar();
switch(b)
{
case 1:
ma1in();
break;
case 2:
ma2in();
break;
case 3:
ma3in();
break;
case 4:
ma4in();
break;
case 5:
ma5in();
break;
default:
printf(“miss miss miss chaochufanwei”);
}
printf(“If your think continue Please input 1 else other number:”);
scanf("%d",&a);
}
}