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#include <stdio.h>
#include <stdlib.h>
struct Student
{
char id[10];
char fName[25];
char lName[25];
char dept[10];
char level[5];
char gpa[5];
char grade[15];
} s , s1 ;
struct Student modify (char* id)
{
FILE * search ;
search = fopen("Assignment_3.txt","a") ;
fread(&s1 , sizeof(s1) , 1 , search ) ;
while(!feof(search))
{
if ( strcmp ( id , s1.id) == 0 )
{
//fseek(search,2,2);
printf("\n This is the old data :\n");
printf("id: %s \n",s1.id);
printf("First Name : %s \n",s1.fName);
printf("Last Name : %s \n",s1.lName);
printf("Last Name : %s \n",s1.dept);
printf("gpa: %s \n",s1.gpa);
printf("level: %s \n",s1.level);
printf("Enter Student ID : ") ;
scanf("%s",s1.id);
fwrite(s1.id , sizeof(s1.id) , 1 , search ) ;
/* printf("Enter Student First Name : ") ;
scanf("%s",s1.fName);
printf("Enter Student Last Name : ") ;
scanf("%s",s1.lName);
printf("Enter Student Department : ") ;
scanf("%s",s1.dept);
printf("Enter Student GPA : ") ;
scanf("%s",s1.gpa);
printf("Enter Student Level : ") ;
scanf("%s",s1.level);
fwrite(&s1 , sizeof(s1) , 1 , search ) ; */
}
fread(&s1 , sizeof(s1) , 1 , search ) ;
}
fclose(search);
}
struct Student search(char* id)
{
FILE * search ;
search = fopen("Assignment_3.txt","r") ;
fread(&s1 , sizeof(s1) , 1 , search ) ;
while(!feof(search))
{
if ( strcmp ( id , s1.id) == 0 )
{
printf("id: %s \n",s1.id);
printf("First Name : %s \n",s1.fName);
printf("Last Name : %s \n",s1.lName);
printf("gpa: %s \n",s1.gpa);
printf("level: %s \n",s1.level);
}
fread(&s1 , sizeof(s1) , 1 , search ) ;
}
fclose(search);
}
int main()
{
char y ;
char ID[10] ;
FILE *risha;
if(risha == NULL)
{
printf("Can't Find The File. \n") ;
exit(1) ;
}
else
{
printf("1- Add Another Student.\n") ;
printf("2- Add Student At begin of file.\n") ;
printf("3- Search For Student.\n") ;
printf("4- Show All Students.\n") ;
printf("5- Modify Student.\n") ;
printf("7- Exit.\n") ;
printf("Enter Your Choice : ") ;
scanf("%s",&y) ;
while ( y != 7 )
{
switch (y)
{
case '1' : // Add Another Student
{
risha=fopen("Assignment_3.txt","a");
printf("Enter Student ID : ") ;
scanf("%s",s.id);
printf("Enter Student First Name : ") ;
scanf("%s",s.fName);
printf("Enter Student Last Name : ") ;
scanf("%s",s.lName);
printf("Enter Student Department : ") ;
scanf("%s",s.dept);
printf("Enter Student GPA : ") ;
scanf("%s",s.gpa);
printf("Enter Student Level : ") ;
scanf("%s",s.level);
fwrite(&s , sizeof(s) , 1 , risha ) ;
fclose(risha) ;
break ;
} // end case 1
case '2' : //Add Student At begin of file
{
risha=fopen("Assignment_3.txt","w");
printf("Enter Student ID : ") ;
scanf("%s",s.id);
printf("Enter Student First Name : ") ;
scanf("%s",s.fName);
printf("Enter Student Last Name : ") ;
scanf("%s",s.lName);
printf("Enter Student Department : ") ;
scanf("%s",s.dept);
printf("Enter Student GPA : ") ;
scanf("%s",s.gpa);
printf("Enter Student Level : ") ;
scanf("%s",s.level);
fwrite(&s , sizeof(s) , 1 , risha ) ;
fclose(risha) ;
break ;
} // end case 2
case '3' : // search
{
printf("Enter Student ID : ") ;
scanf("%s",ID) ;
search ( ID ) ;
break ;
} // end case 3
case '4' : // display all students
{
risha = fopen("Assignment_3.txt","r");
while(!feof(risha))
{
fread(&s1 , sizeof(s1) , 1 , risha ) ;
printf("id: %s \n",s1.id);
printf("First Name : %s \n",s1.fName);
printf("Last Name : %s \n",s1.lName);
printf("gpa: %s \n",s1.gpa);
printf("level: %s \n",s1.level);
}
fclose(risha);
break ;
} // end case 4
case '5' :
{
printf("Enter Student ID : ") ;
scanf("%s",ID) ;
modify ( ID ) ;
break ;
} // end case 5
case '7' :
{
system("pause");
return 0 ;
}
} // end switch
printf("\n1- Add Another Student.\n") ;
printf("2- Add Student At begin of file.\n") ;
printf("3- Search For Student.\n") ;
printf("4- Show All Students.\n") ;
printf("5- Modify Student.\n") ;
printf("7- Exit.\n") ;
printf("Enter Your Choice : ") ;
scanf("%s",&y) ;
} // end while
} // end else
system("pause") ;
return 0 ;
}
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