C language roll management system source code

C Language roll Management system, 1 copy for your reference, the specific content is as follows

#include <stdio.h> 
#include <conio.h> 
#include <stdlib.h> 
#define N 100 
void mycreat(); 
void mynewcreat(); 
void mydisplay(); 
void myretake(); 
void myselect(); 
void mynumsort(); 
void mysort(); 
void myprint1(); 
void myprint2(); 
void myprint3(); 
void myfenduan(); 
struct student 
{ 
 char name[10]; 
 int grade[5]; 
 double ave; 
 char num[10]; 
 
}; 
void myprint1() 
{ 
 char choose='\0',yes_no='\0'; 
 do 
 { 
 system("cls"); 
 printf (" |---------------------------|\n"); 
 printf (" |  Please enter the option number (0-4) |\n"); 
 printf (" |---------------------------|\n"); 
 printf (" | 1---------- School grades  |\n"); 
 printf (" | 2---------- Statistical results  |\n"); 
 printf (" | 3---------- Dealing with one's status as a student  |\n"); 
 printf (" | 4---------- Display the data  |\n"); 
 printf (" | 0---------- Log out  |\n"); 
 printf (" |---------------------------|\n"); 
 printf("   "); 
 choose=getche(); 
 switch(choose) 
 { case '1':mycreat(); break; 
  case '2':myprint2(); break; 
  case '3':myprint3(); break; 
  case '4':mydisplay(); break; 
  case '0':break; 
  default :printf("\n   %c Illegal option! \n",choose); 
 } 
 if(choose=='0') 
  { 
  printf("\n"); 
  printf(" Thank you for your use! \n"); 
  break; 
  } 
 printf("\n    Should I continue to choose (Y/N) ? \n"); 
 do 
 { yes_no=getch( ); 
 } while(yes_no!='Y' && yes_no!='y'&& yes_no!='N' && yes_no!='n'); 
 } while(yes_no=='Y' || yes_no=='y'); 
} 
 
 
void myprint2() 
{ 
 char choose='\0',yes_no='\0'; 
 do 
 { 
 system("cls"); 
 printf (" |-----------------------------------|\n"); 
 printf (" |  Please enter the option number (0-4)  |\n"); 
 printf (" |-----------------------------------|\n"); 
 printf (" | 1---------- Sort by student number   |\n"); 
 printf (" | 2---------- Calculate the average score and sort it  |\n"); 
 printf (" | 3---------- Statistical fraction segment   |\n"); 
 printf (" | 4---------- return    |\n"); 
 printf (" | 0---------- Log out   |\n"); 
 printf (" |-----------------------------------|\n"); 
 printf("   "); 
 choose=getche(); 
 switch(choose) 
 { case '1':mynumsort(); break;  
  case '2':mysort(); break; 
  case '3':myfenduan(); break;  
  case '4':myprint1(); break; 
  case '0':break; 
  default :printf("\n   %c Illegal option! \n",choose); 
 } 
 if(choose=='0') 
  { 
  printf("\n"); 
  printf(" Thank you for your use! \n"); 
  break; 
  } 
 printf("\n    Should I continue to choose (Y/N) ? \n"); 
 do 
 { yes_no=getch( ); 
 } while(yes_no!='Y' && yes_no!='y'&& yes_no!='N' && yes_no!='n'); 
 } while(yes_no=='Y' || yes_no=='y'); 
} 
 
void myprint3() 
{ 
 char choose='\0',yes_no='\0'; 
 do 
 { 
 system("cls"); 
 printf (" |---------------------------------------|\n"); 
 printf (" |  Please enter the option number (0-4)   |\n"); 
 printf (" |---------------------------------------|\n"); 
 printf (" | 1---------- Generate and print the make-up exam notice  |\n"); 
 printf (" | 2---------- Generate and print the drop-out notice  |\n"); 
 printf (" | 3---------- Generate and print the new roster   |\n"); 
 printf (" | 4---------- return    |\n"); 
 printf (" | 0---------- Log out    |\n"); 
 printf (" |---------------------------------------|\n"); 
 printf("   "); 
 choose=getche(); 
 switch(choose) 
 { case '1':myretake(); break; 
  case '2':myselect(); break; 
  case '3':mynewcreat(); break; 
  case '4':myprint1(); break; 
  case '0':break; 
  default :printf("\n   %c Illegal option! \n",choose); 
 } 
 if(choose=='0') 
  { 
  printf("\n"); 
  printf(" Thank you for your use! \n"); 
  break; 
  } 
 printf("\n    Should I continue to choose (Y/N) ? \n"); 
 do 
 { yes_no=getch( ); 
 } while(yes_no!='Y' && yes_no!='y'&& yes_no!='N' && yes_no!='n'); 
 } while(yes_no=='Y' || yes_no=='y'); 
} 
 
void mycreat() 
{ 
 int i=1,j=0; 
 struct student temp={0}; 
 FILE*fp=NULL; 
 fp=fopen("d:\\yuan.dat","w"); 
 if(fp==NULL) 
 { 
 printf(" Failed to open file! \n"); 
 return; 
 } 
 system("cls"); 
 printf(" Note: Please keep all the digits when entering your student id 1 To be out of position 0 A filling. For example, the maximum student number is 1000 Are all keep 4 A significant digit. "); 
 printf("\n  Please enter the first 1 A record: \n"); 
 printf("  Student id ( with # The end of the input ):"); 
 do 
 { 
 gets(temp.num); 
 }while(strcmp(temp.num,"")==0); 
 printf("  The name ( with # The end of the input ):"); 
 gets(temp.name); 
 printf("  Please enter the   The high number of   English   physical   programming   philosophy  5 Set of results ( with # The end of the input ): "); 
 for(j=0;j<=4;j++) 
 { 
 scanf("%d",&temp.grade[j]); 
 } 
 
 while(temp.num[0]!='#'&&temp.name[0]!='#'&&temp.grade[0]!='#') 
 { 
 fprintf(fp,"%23s%15s",temp.num,temp.name); 
 for(j=0;j<=4;j++) 
 { 
  fprintf(fp,"%5d",temp.grade[j]); 
 } 
 fprintf(fp,"\n"); 
 i++; 
 printf("\n   Please enter the first %d A record :\n",i); 
 printf("   Student id ( with # The end of the input ):"); 
 do 
 { 
  gets(temp.num); 
 }while(strcmp(temp.num,"")==0); 
  printf("  The name ( with # The end of the input ):"); 
 gets(temp.name); 
 printf("  Please enter the   The high number of   English   physical   programming   philosophy  5 Set of results  ( with # The end of the input ): "); 
 for(j=0;j<=4;j++) 
 { 
  scanf("%8d",&temp.grade[j]); 
 } 
 
 } 
 fclose(fp); 
} 
void mynumsort() 
{ 
 int i=0,j=0,k=0,n=0,grade=0,num=0,m=0,ww; 
 struct student temp[N]={0}; 
 struct student a; 
 FILE *fp=NULL; 
 FILE *fq=NULL; 
 fp=fopen("d:\\yuan.dat","r"); 
 if(fp==NULL) 
 { 
 printf("\n  Failed to open file !\n"); 
 return; 
 
 } 
 system("cls"); 
 while(feof(fp)==0) 
 { 
 ww=fscanf(fp,"%23s%15s",temp[n].num,temp[n].name); 
 if(ww==-1) break; 
 for(j=0;j<5;j++) 
 { 
  fscanf(fp,"%d",&temp[n].grade[j]); 
  
 } 
 n++; 
 } 
 printf("n=%d",n); 
 fclose(fp); 
 printf("\n"); 
 for(i=0; i<n; i++)   
 { k=i; 
 for(j=k+1; j<n; j++) 
  if(strcmp(temp[k].num,temp[j].num)>0) 
  k=j; 
 a=temp[i]; 
 temp[i]=temp[k]; 
 temp[k]=a; 
 } 
 for(k=0;k<n;k++) 
 { 
 printf("%10s No.  %10s classmate ",temp[k].num,temp[k].name); 
 for(m=0;m<5;m++) 
 { 
  printf("%5d points ",temp[k].grade[m]); 
 } 
 printf("\n"); 
 } 
 if(n==0)printf("\n  There is no record in the file! \n"); 
 else printf("\n   In the file %d A record ",n); 
 
 fq=fopen("d:\\std.dat","w"); 
 if(fq==NULL) 
 { 
 printf(" Failed to open file! \n"); 
 exit(0); 
 } 
 for(i=0;i<n;i++) 
 { 
 fprintf(fq,"%23s%15s",temp[i].num,temp[i].name); 
 for(j=0;j<5;j++) 
 { 
  fprintf(fq,"%2d",temp[i].grade[j]); 
 } 
 fprintf(fq,"\n"); 
 } 
 fclose(fq); 
 printf(" Calculation completed   Stored in the d:\std.dat Among the documents, please check "); 
} 
void mysort() 
{ 
 struct student temp[N]={0},a[N]={0}; 
 int i=0,j=0,n=0,ww=0; 
 FILE*fp=NULL; 
 FILE*fq=NULL; 
 fp=fopen("d:\\yuan.dat","r"); 
 if(fp==NULL) 
 { 
 printf(" Failed to open file! \n"); 
 exit(0); 
 } 
 system("cls"); 
 while(feof(fp)==0) 
 { 
 ww=fscanf(fp,"%23s%15s",temp[n].num,temp[n].name); 
 if(ww==-1) break; 
 for(j=0;j<5;j++) 
 { 
  fscanf(fp,"%d",&temp[n].grade[j]); 
  
 } 
 n++; 
 } 
 
 for(i=0;i<n;i++) 
 { 
 for(j=0;j<5;j++) 
 { 
  temp[i].ave=temp[i].ave+temp[i].grade[j]; 
 } 
 temp[i].ave=temp[i].ave/5; 
  
 } 
 for(i=0;i<n;i++) 
 { 
 if(temp[i].ave<temp[i+1].ave) 
 { 
  a[i]=temp[i]; 
  temp[i]=temp[i+1]; 
  temp[i+1]=a[i]; 
 } 
 } 
 fq=fopen("d:\\sort.dat","w"); 
 if(fq==NULL) 
 { 
 printf(" Failed to open file! \n"); 
 exit(0); 
 } 
 for(i=0;i<n;i++) 
 { 
 fprintf(fq,"%23s%15s%10.2f",temp[i].num,temp[i].name,temp[i].ave ); 
 
 for(j=0;j<5;j++) 
 { 
  fprintf(fq,"%2d",temp[i].grade[j]); 
 } 
 fprintf(fq,"\n"); 
 } 
 
 fclose(fq); 
 printf(" Calculation completed   Stored in the d:\sort.dat Among the documents, please check "); 
} 
 
void myfenduan() 
{ 
 int i=0,j=0,n=0,ww; 
 int b[N]={0},c[N]={0},d[N]={0},e[N]={0},f[N]={0}; 
 struct student temp[N]={0}; 
 FILE*fp=NULL; 
 fp=fopen("d:\\yuan.dat","r"); 
 if(fp==NULL) 
 { 
 printf(" Failed to open file! \n"); 
 return; 
 } 
 system("cls"); 
 while(feof(fp)==0) 
 { 
 ww=fscanf(fp,"%23s%15s",temp[n].num,temp[n].name); 
 if(ww==-1) break; 
 for(j=0;j<5;j++) 
 { 
  fscanf(fp,"%d",&temp[n].grade[j]); 
  
 } 
 n++; 
 } 
 for(i=0;i<n;i++) 
 { 
 for(j=0;j<5;j++) 
  { 
  if(temp[i].grade[j]>=90) 
   b[j]=b[j]+1; 
  else if(temp[i].grade[j]>=80) 
   c[j]=c[j]+1; 
  else if(temp[i].grade[j]>=70) 
   d[j]=d[j]+1; 
  else if(temp[i].grade[j]>=60) 
   e[j]=e[j]+1; 
  else f[j]=f[j]+1; 
  } 
 } 
 printf(" The number of students in each course and section \n"); 
 printf("________________________________________________________\n"); 
 printf(" |90 Points above  | 80~89 points  | 70~79 points  | 60~69 points  | 60 The following  \n"); 
 printf("--------------------------------------------------------\n"); 
 printf(" The high number of _____%d________%d_________%d________%d_________%d___\n",b[0],c[0],d[0],e[0],f[0]); 
 printf("__________________________________________________\n"); 
 printf(" English _____%d________%d_________%d________%d_________%d___\n",b[1],c[1],d[1],e[1],f[1]); 
 printf("__________________________________________________\n"); 
 printf(" physical _____%d________%d_________%d________%d_________%d___\n",b[2],c[2],d[2],e[2],f[2]); 
 printf("__________________________________________________\n"); 
 printf(" programming _____%d________%d_________%d________%d_________%d___\n",b[3],c[3],d[3],e[3],f[3]); 
 printf("__________________________________________________\n"); 
 printf(" philosophy _____%d________%d_________%d________%d_________%d___\n",b[4],c[4],d[4],e[4],f[4]); 
 printf("__________________________________________________\n"); 
 fclose(fp); 
} 
void mydisplay() 
{ int n=0,j=0,k=0,m=0,ww; 
 struct student temp[N]={0}; 
 FILE*fp=NULL; 
 fp=fopen("d:\\yuan.dat","r"); 
 if(fp==NULL) 
 { 
 printf(" Failed to open file! \n"); 
 return; 
 } 
 system("cls"); 
 while(feof(fp)==0) 
 { 
 ww=fscanf(fp,"%23s%15s",temp[n].num,temp[n].name); 
 if(ww==-1) break; 
 for(j=0;j<5;j++) 
 { 
  fscanf(fp,"%d",&temp[n].grade[j]); 
  
 } 
 n++; 
 } 
 for(k=0;k<n;k++) 
 { 
 printf("%23s %15s ",temp[k].num,temp[k].name); 
 
 for(m=0;m<5;m++) 
 { 
  printf("%d ",temp[k].grade[m]); 
 } 
 printf("\n"); 
 } 
 if(n==0)printf("\n  There is no record in the file! \n"); 
 else printf("\n  The files are all together %d A record! ",n); 
 fclose(fp); 
} 
 
void myretake() 
{ 
 int i=0,e=0,j=0,n=0,s[5]={0},ww; 
 struct student temp[N]={0}; 
 FILE*fp=NULL; 
 fp=fopen("d:\\yuan.dat","r"); 
 if(fp==NULL) 
 { 
 printf(" Failed to open file! \n"); 
 return; 
 } 
 while(feof(fp)==0) 
 { 
 ww=fscanf(fp,"%23s%15s",temp[n].num,temp[n].name); 
 if(ww==-1) break; 
 for(j=0;j<5;j++) 
 { 
  fscanf(fp,"%d",&temp[n].grade[j]); 
  
 } 
 n++; 
 } 
 for (i=0;i<n;i++) 
 { 
 for(j=0;j<5;j++) 
 { 
  if(temp[i].grade[j]<60) 
  s[i]++; 
 } 
  
 if(s[i]>=1 && s[i]<=3) 
 { printf("\n"); 
  printf(" Student id %10s  The name %10s \n",temp[i].num,temp[i].name); 
 if(temp[i].grade[0]<60) 
  printf("%10s Your advanced degree is %6d A make-up examination is required , please 2011 years 2 month 26 The morning of 9 Point at the teaching building 5023 The classroom has a make-up examination \n",temp[i].name,temp[i].grade[0]); 
  
 if(temp[i].grade[1]<60) 
  printf("%10s Your score in English is %6d A make-up examination is required , please 2011 years 2 month 27 The morning of 9 Point at the teaching building 5023 The classroom has a make-up examination \n",temp[i].name,temp[i].grade[1]); 
  
 if(temp[i].grade[2]<60) 
  printf("%10s Your physics score is %6d A make-up examination is required , please 2011 years 2 month 28 The morning of 9 Point at the teaching building 5023 The classroom has a make-up examination \n",temp[i].name,temp[i].grade[2]); 
  
 if(temp[i].grade[3]<60) 
  printf("%10s Your programming score is %6d A make-up examination is required , please 2011 years 2 month 26 On the afternoon 3 Point at the teaching building 5023 The classroom has a make-up examination \n",temp[i].name,temp[i].grade[3]); 
  
 if(temp[i].grade[4]<60) 
  printf("%10s Your marks for Mazur are %6d A make-up examination is required , please 2011 years 2 month 28 On the afternoon 3 Point at the teaching building 5023 The classroom has a make-up examination \n",temp[i].name,temp[i].grade[4]); 
 } 
 } 
 for(e=0;e<n;e++) 
 { 
 if(s[e]!=0) 
 { 
  printf("\n"); 
  printf(" The above students need make-up examination! "); 
 } 
 else 
 { 
  printf("\n"); 
  printf(" No students need make-up exams! "); 
 } 
 break; 
 } 
} 
void myselect() 
{ 
 int i=0,k=0,s[5]={0},n=0,j=0,ww; 
 struct student temp[N]={0}; 
 FILE*fp=NULL; 
 fp=fopen("d:\\yuan.dat","r"); 
 if(fp==NULL) 
 { 
 printf(" Failed to open file! \n"); 
 return; 
 } 
 while(feof(fp)==0) 
 { 
 ww=fscanf(fp,"%23s%15s",temp[n].num,temp[n].name); 
  
 for(j=0;j<5;j++) 
  { 
  ww=fscanf(fp,"%d",&temp[n].grade[j]); 
  if(ww==-1) break; 
 } 
 n++; 
 } 
 for(i=0;i<n-1;i++) 
 { 
  
  for(k=0;k<5;k++) 
  { 
  if (temp[i].grade[k]<60) 
   s[i]=s[i]+1; 
  }  
  if(s[i]>3) 
  { 
  printf("\n"); 
  printf(" Student id %10s  The name %10s  Because you failed the subject for %d The door (more than 3 ), so I quit school. \n",temp[i].num,temp[i].name,s[i]); 
  if (temp[i].grade[0]<60) 
   printf("%15s Your advanced degree is %6d To fail. \n",temp[i].name,temp[i].grade[0]); 
   
  if (temp[i].grade[1]<60) 
   printf("%15s Your score in English is %6d To fail. \n",temp[i].name,temp[i].grade[1]); 
   
  if (temp[i].grade[2]<60) 
   printf("%15s Your physics score is %6d To fail. \n",temp[i].name,temp[i].grade[2]); 
   
  if (temp[i].grade[3]<60) 
   printf("%15s Your programming score is %6d To fail. \n",temp[i].name,temp[i].grade[3]); 
   
  if (temp[i].grade[4]<60) 
   printf("%15s Your marks for Mazur are %6d To fail. \n",temp[i].name,temp[i].grade[4]); 
   
  } 
 } 
} 
 
void mynewcreat() 
{ 
 int i=0,k=0,s[5]={0},z[5]={0},v=0,n=0,m=0,j=0,p=0,c=0,ww; 
 struct student temp[N]={0}; 
 FILE*fp=NULL; 
 FILE*fq=NULL; 
 fp=fopen("d:\\yuan.dat","r"); 
 if(fp==NULL) 
 { 
 printf(" Failed to open file! \n"); 
 return; 
 } 
 while(feof(fp)==0) 
 { 
 ww=fscanf(fp,"%23s%15s",temp[n].num,temp[n].name); 
 if(ww==-1) break; 
 for(j=0;j<5;j++) 
 { 
  fscanf(fp,"%d",&temp[n].grade[j]); 
  
 } 
 n++; 
 } 
 while(i<=n) 
 { 
  for(k=0;k<5;k++) 
  { 
  if (temp[i].grade[k]<60) 
  s[i]=s[i]+1; 
  } 
  
  for(v=0;v<5;v++) 
  { 
  if(temp[i].grade[v]==0) 
   z[i]++; 
  } 
  if(z[i]==5) 
  { 
  break; 
  } 
  if(s[i]<=3) 
  { 
  i++; 
  } 
  if(s[i]>3) 
  { 
  for(c=i;c<=n;c++) 
  { 
   temp[c]=temp[c+1]; 
  } 
  s[i]=0; 
  } 
 }  
 printf("\n"); 
 printf(" After the removal of a dropped out student, the student roster is: "); 
 printf("\n"); 
 for(p=0;p<n-1;p++) 
 { 
  printf("\n"); 
  printf("%10s No.  %10s points  ",temp[p].num,temp[p].name); 
  for(m=0;m<5;m++) 
  { 
   printf("%d ",temp[p].grade[m]); 
  } 
  printf("\n"); 
 } 
 fq=fopen("d:\\next.dat","w"); 
 if(fq==NULL) 
 { 
 printf(" Failed to open file! \n"); 
 exit(0); 
 } 
 for(i=0;i<n;i++) 
 { 
 fprintf(fq,"%23s%15s",temp[i].num,temp[i].name); 
 for(j=0;j<5;j++) 
 { 
  fprintf(fq,"%2d",temp[i].grade[j]); 
 } 
 fprintf(fq,"\n"); 
 } 
fclose(fq); 
 printf(" Calculation completed   Stored in the d:\next.dat Among the documents, please check "); 
} 
main() 
{ 
 myprint1(); 
 } 

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