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وارد کردن اطلاعات دانشجویان؛جستجو بر اساس دو فیلد؛خذف دانشجو بر اساس دو فیلد؛ذحیره اطلاعات در فایل؛مرتب کردن اسامی بر اساس الفبای لاتین و.....
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include<string.h>
#define MAX 100
struct student {
char name[10] ;
float avrage ;
int unit ;
int amount_course ;
int student_number;
} st[MAX];
void first_evalution(void);
void enter(void);
void search(void);
void search2(void);
void del_name(int);
void display(void);
void top_student();
void fail_student();
void show(int *, int);
void title(int *);
int menu_select(void);
int spare_space(void) ;
void save (void);
void load(void);
void in_style(int l);
void delete_main(void);
void delete_name2(void);
void search_main(void);
static int l;
int main(void)
{
char choice ,ans;
first_evalution();
for(;;){
choice = menu_select() ;
switch(choice) {
case 1: enter();in_style(l); break;
case 2: search_main(); break ;
case 3: top_student(); break;
case 4: fail_student(); break ;
case 5: delete_main(); break ;
case 6: save();break;
case 7: load();break;
case 8: display();break;
case 9:{
printf("are you sure you want to quit ?(y/n)");
ans=getche();
clrscr();
if(ans=='y')
exit(0);break; }
}
}
}
void first_evalution(void)
{
register int i ;
for(i = 0; i < MAX; ++i)
st[i].name[0] = '\0' ;
}
int menu_select(void)
{
char s[10];
int g ;
printf("\n\t(1) << enter information >>");
printf("\n\t(2) << search menu >>");
printf("\n\t(3) << show top students >>");
printf("\n\t(4) << show fail students >>");
printf("\n\t(5) << delete menu >>");
printf("\n\t(6)<< save info >>");
printf("\n\t(7)<< load info >>");
printf("\n\t(8)<< display info >>");
printf("\n\t(9)<< quit from program >>");
do {
printf("\n\t Please enter your choice(1-9): ") ;
gets(s);
clrscr();
g = atoi(s);
} while(g < 0 || g > 9) ;
return (g) ;
}
void enter(void)
{
char name3[30];
float grade, sum_grade = 0;
int t, unit, sum_unit = 0 ,j,i;
t = spare_space() ;
if(t == -1){
printf("\n sorry the list is full.....press any key to continue");
getch();
return ;
}
printf("\n\t enter name:") ;
gets(st[t].name) ;
strcpy(name3,st[t].name);
for(i=0;i<t && st[i].name[0] ;i++)
{
if(strcmp(st[i].name,name3)==0){
printf("the similar name is already in the list. contine any way?(y,n)");
if(getche()=='n')
{
clrscr();
st[t].name[0]='\0';
return ;}}
}
l++;
clrscr();
printf("\n\tenter student number:") ;
scanf("%d", &st[t].student_number) ;
clrscr();
printf("\n\tenter number of course:") ;
scanf("%d", &st[t].amount_course) ;
clrscr();
for(j = 1; j <= st[t].amount_course; j++) {
printf("\n\tenter grade for course %d:",j);
scanf("%f", &grade) ;
clrscr();
printf("\n\tenter unit of course %d:", j);
scanf("%d", &unit) ;
clrscr();
sum_grade += grade * unit ;
sum_unit += unit ;
}
st[t].unit=sum_unit;
st[t].avrage = sum_grade / sum_unit ;
}
int spare_space(void)
{
register int i ;
for(i = 0; st[i].name[0] && i< MAX ; ++i);
if(i == MAX) return -1 ;
return i ;
}
void delete_main(void)
{
char c[10];
int h;
do {
printf("how do you want to delete info ?");
printf("\n\t\t\t(1)=base on name");
printf("\n\t\t\t(2)=base on student number");
gets(c);
clrscr();
h=atoi(c);} while(h<0 || h>2);
if(h==1){
delete_name2();}
if(h==2){
del_name(l);}
if(h!=1 && h!=2)
return;
}
void del_name(int l)
{
int i ;
char ans;
printf("\n\tenter record #(0 - %d):",l) ;
scanf("%d", &i) ;
printf("are u sure you want to delete record %d?(y/n)");
ans=getche();
clrscr();
if(ans=='y'){
if( st[i].name[0]){
st[i].name[0]='\0' ;
printf("deleted Successfully !!");}
else if(!st[i].name[0])
printf("this record is not in the list....press any key to continue...."); }
getch();
clrscr();
}
void delete_name2(void)
{
char name2[30],ans;
int i,h,w=0;
printf("\tenter a name to delete");
gets(name2);
printf("are you sure you want to delete %s information?(y/n)",name2);
ans=getche();
clrscr();
if(ans=='y'){
for(i=0;i<MAX;i++)
{
if(strcmp(st[i].name,name2)==0) {
h=i;
w=1; }}
if(w==1){
st[h].name[0]='\0' ;
printf("deleted Successfully !!");
}
if(w==0) {
printf("the one you are looking for is not in the list.press any key to continue.........."); }}
getch();
clrscr();
}
void display(void)
{
int i, r = 0;
;
title(&r) ;
for(i = 0; i < MAX; ++i)
if(st[i].name[0])
show(&r, i);
gotoxy(114,r);
printf("\n\t please press any key to continue ") ;
getch();
clrscr();
gotoxy(29,r+1);
getch();
}
void fail_student(void)
{
int i, r=0 ,a=0;
for(i = 0; i < MAX; ++i){
if(st[i].name[0] && st[i].avrage < 12){
a=1;
title(&r);
show(&r, i) ; }
}
if(a==0){
printf("there is no fail student!");}
gotoxy(25,r+1);
printf(" please press any key to continue ") ;
getch();
clrscr();
}
void top_student(void)
{
int i, r=0 ,a=0;
for(i = 0; i < MAX; ++i){
if(st[i].name[0] && st[i].avrage >= 17){
a=1;
title(&r);
show(&r, i) ; }
}
if(a==0){
printf("there is no top student!");}
gotoxy(25,r+1);
printf(" please press any key to continue ") ;
getch();
clrscr();
}
void title(int *r)
{
*r = 1;
gotoxy(25,*r);
printf(" << all the info in list are: >>");
gotoxy(6,*r+2);
printf(" name avrage ");
printf(" unit amount_course st_no ");
gotoxy(6,*r+3);
printf(" ________ ________ ");
printf(" ______ ______ ____ ");
*r = 4;
}
void show(int *r, int i)
{
gotoxy(14,*r);
printf("%s ", st[i].name) ;
gotoxy(26,*r);
printf("%.2f ", st[i].avrage) ;
gotoxy(40,*r);
printf("%d ", st[i].unit) ;
gotoxy(54,*r);
printf("%d ", st[i].amount_course) ;
gotoxy(70,*r);
printf("%u ", st[i].student_number) ;
(*r) ++ ;
}
void search_main(void)
{
char j[10];
int y;
do {
printf("how do you want to search?");
printf("\n\t\t\t(1)=base on name");
printf("\n\t\t\t(2)=base on student number");
gets(j);
clrscr();
y=atoi(j);} while (y<0 || y>2);
if(y==1){
search();}
if(y==2){
search2();}
if(y!=1 && y!=2)
return ;
}
void search(void)
{
int i,r=0,m=0,t=0;
char name2[30];
printf("enter a name to search");
gets(name2);
clrscr();
for(i=0;st[i].name[0];i++)
{
if(strcmp(name2,st[i].name)==0){
t=i;
m=1; }}
if(m==1){
title(&r) ;
show(&r, t);}
if (m==0)
printf("the one you are looking for is not in the list......press any key to continue");
getch();
clrscr();
}
void save(void)
{
FILE *fp ;
register int i ;
fp = fopen("project", "wb");
if(!fp) {
printf("\n cannot open file press a key ...");
getch() ;
clrscr();
return ;
}
for(i = 0 ; i < MAX ; i++)
if(*st[i].name)
fwrite(&st[i], sizeof(struct student), 1, fp) ;
clrscr() ;
gotoxy(20, 10) ;
printf("data saved.press a key.");
getch() ;
clrscr();
}
void load(void){
FILE *fp ;
register int i ;
fp = fopen("project", "rb");
if(!fp) {
printf("\n cannot open file press a key ...");
getch() ;
clrscr();
return ;
}
for(i = 0 ; i < MAX; i++) {
fread(&st[i], sizeof(struct student), 1, fp);
if(feof(fp)) {
clrscr() ;
gotoxy(20,10) ;
printf("data are loaded.press a key...........");
getch() ;
clrscr();
return ;
}
}
}
void search2(void)
{
int i,num2,r=0,a;
printf("enter the student number for the one you are looking for");
scanf("%d",&num2);
a=0;
for(i=0;i<MAX;i++){
if(st[i].student_number==num2){
a=1;
title(&r);
show(&r,i);}}
if(a==0)
printf("the one you are lookig for is not in the list...press any key to continue...");
getch();
clrscr();
}
void in_style(int l)
{
int i,j;
char name2[30];
struct student st1={0};
for(i=l-1;i>0;i--){
for(j=0;j<i;j++)
if(strcmp(st[j].name,st[j+1].name)>0){
st1=st[j];
st[j]=st[j+1];
st[j+1]=st1;
}
}
return;
}
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