C语言项目--教师信息/学生成绩管理系统

这个系统实现两个功能，分别是管理教师的信息和学生的成绩，用户可以选择切换实现相应的功能。话不多说了，现在看下程序的实现截图：
  这里给出程序代码下载地址：http://download.csdn.net/detail/dlutbrucezhang/5191828
  





  



  



  



  

  下面贴出部分代码：
  void
add_tea(Teacher tea[]) 
{ 
int i=0,j,num; 
char str[5]; 
if(numtea!=0) 
{ 
  printf("cover the current record?(y/n)\n"); 
  gets(str); 
  if(str[0]=='Y'||str[0]=='y') 
   i=0; 
  else i=numtea; 
} 

printf("Please input the number of you add the teachers:"); 
scanf("%d",&num); 
if(i==0) 
  numtea=num; 
else numtea+=num; 
if(numtea>lens) 
{ 
  lens+=10; 
  tea=(Teacher *)realloc(tea,lens*SIZE); 
} 
printf("Please input the teacher's info:\n"); 
for(;i<numtea;i++) 
{ 
  getchar(); 
  printf("please input the teacher's NO.:"); 
  gets(tea.number); 

  printf("please input the teacher's name:"); 

  gets(tea.name); 

  printf("please input the teacher's sex(man/woman 0/1):"); 

  gets(tea.sex); 

  if(tea.sex[0]=='0') strcpy(tea.sex,"man"); 

  else strcpy(tea.sex,"woman"); 

  printf("please input the teacher's address:"); 

  gets(tea.addr); 

  printf("the teacher is married(No/Yes 0/1):"); 

  gets(tea.married); 

  if(tea.sex[0]=='0') strcpy(tea.sex,"No"); 

  else strcpy(tea.sex,"Yes"); 

} 

display_tea(tea,0,numtea-1); 

getchar(); 

}

void display_tea(Teacher tea[],int n1,int n2) 

{ 

int i;

char str[2];

if(numtea==0){

        printf("There is Nothing!\n");

     printf("Do you want to open some file to find the record?(Y/N)\n");

     gets(str);

     if (str[0]=='Y'||str[0]=='y')

     {

      openfileTXT(tea);

     }

     else

     {

      return;

     }

}

else

{

  for(i=n1;i<=n2;i++) 

   printf("number:%s\tname:%s\t\tsex:%s\t\taddr:%s\t\tmarried:%s\t",tea.number,tea.name,tea.sex,tea.addr,tea.married);

}

} 

void adjust(Teacher tea[]) 

{ 

char str[5]; 

int i=-1,j; 

if(numtea==0) 

{

  printf("there is nothing !!!\n"); 

  return;

}

while(i<0) 

{ 

  i=find_tea(tea); 

  if(i>=0) 

  { 

   printf("Delete it?(y/n)"); 

   gets(str); 

   if(str[0]=='y'||str[0]=='Y') 

   { 

    delete_tea(tea,i); 

    /*count(stud); */

   } 

   else 

   { 

    printf("Adjust it?(y/n)"); 

    gets(str); 

    if(str[0]=='y'||str[0]=='Y') 

    { 

     printf("Please input something you want:\n"); 

     printf("please input the teacher's NO.:"); 

     gets(tea.number); 

     printf("please input the teacher's name:"); 

     gets(tea.name); 

     printf("please input the teacher's sex(man/woman 0/1):"); 

     gets(tea.sex); 

     if(tea.sex[0]=='0') strcpy(tea.sex,"man"); 

     else strcpy(tea.sex,"woman"); 

     printf("please input the teacher's address:"); 

     gets(tea.addr); 

     printf("the teacher is married(No/Yes 0/1):"); 

     gets(tea.married); 

     if(tea.sex[0]=='0') strcpy(tea.sex,"No"); 

     else strcpy(tea.sex,"Yes"); 

    } 

    /*count(stud); */

   } 

   display_tea(tea,0,numtea-1); 

  } 

  printf("Again to Adjust it ?(y/n)\n"); 

  gets(str); 

  if(str[0]=='y'||str[0]=='Y') 

   i=-1; 

  else i=1; 

} 

} 

int find_tea(Teacher tea[]) 

{ 

char str[10]; 

int i; 

if(numtea==0) 

{ 

  printf("There is nothing\n"); 

  return -1; 

} 

else 

{ 

  printf("what do you want your fashion ?\n1.number\t2.name\t3.addr\n"); 

  gets(str); 

  if(str[0]=='1') 

  { 

   printf("please input the teacher's number:"); 

   gets(str); 

   for(i=0;i<=numtea;i++) 

    if(strcmp(str,tea.number)==0) 

    { 

     display_tea(tea,i,i); 

     break; 

    } 

    else continue; 

  } 

  else if(str[0]=='2') 

  { 

   printf("please input the teacher's name:"); 

   gets(str); 

   for(i=0;i<=numtea;i++) 

    if(strcmp(str,tea.name)==0) 

    { 

     display_tea(tea,i,i); 

     break; 

    } 

    else continue; 

  } 

  else if(str[0]=='3') 

  { 

   printf("please input the teacher's address:"); 

   gets(str);

   for(i=0;i<=numtea;i++) 

    if(strcmp(str,tea.addr)==0) 

    { 

     display_tea(tea,i,i); 

     break; 

    } 

    else continue; 

  } 

  if(i>numtea) 

  { 

   printf("Nothing has find\n"); 

   return -1; 

  } 

  return i; 

} 

} 

void delete_tea(Teacher tea[],int i) 

{ 

int j; 

while(i>=0) 

{ 

  for(j=i;j<numtea;j++) 

   tea[j]=tea[j+1]; 

  numtea--; 

  printf("Delete Success!\n"); 

} 

} 

int writetoTXT(Teacher tea[]) 

{ 

int i=0,j; 

FILE *fp; 

char filename[20]; 

printf("Please input the file's name:"); 

gets(filename); 

fp=fopen(filename,"w"); 

fprintf(fp,"%d\n",numtea); 

while(i<numtea) 

{ 

  fprintf(fp,"%s %s %s %s %s",tea.number,tea.name,tea.sex,tea.addr,tea.married); 

  i++; 

} 

fclose(fp); 

printf("Save success!!!\n"); 

display_tea(tea,0,numtea-1); 

numtea=0; 

return 0; 

} 

int openfileTXT(Teacher tea[]) 

{ 

int i=0,j; 

FILE *fp; 

char filename[20],str[2]; 

if(numtea!=0) 

{ 

  printf("There has some records,Do you want to save them?(y/n)"); 

  gets(str); 

  if(str[0]=='y'||str[0]=='Y') 

   writetoTXT(tea); 

} 

printf("Please input the file name:"); 

gets(filename); 

numtea=0; 

if((fp=fopen(filename,"rb+"))==NULL) 

{ 

  printf("Sorry ,can't open the file\n"); 

  return(-1); 

} 

fscanf(fp,"%d",&numtea); 

fgetc(fp); 

while(i<numtea) 

{ 

  fscanf(fp,"%s",&tea.number); 

  fscanf(fp,"%s",&tea.name); 

  fscanf(fp,"%s",&tea.sex); 

  fscanf(fp,"%s",&tea.addr); 

  fscanf(fp,"%s",&tea.married); 

  i++; 

} 

fclose(fp); 

printf("Read the file success\n"); 

printf("Display the record ?(y/n)"); 

gets(str); 

if(str[0]=='y'||str[0]=='Y') 

  display_tea(tea,0,numtea-1); 

return(0); 

} 

void displayTheSystemInfo() 

{ 

printf("\t\t制作人员: \n\n"); 

printf("http://www.shengshiyouxi.com"); 

printf("\n\n"); 

}