student_information_system_v1.c

/*

    student_information_system_v1.c     by Dragan Milicev

    for Ephraim Daniel Villegas

    https://web.facebook.com/eph.nyl

I don't know how old you are or how well you know the C programming language.
I see that you programming on mobile phone and that is an impossible job for me.
You probably can't afford a computer, so you have to do it by mobile phone.
Congratulations on your hard work and persistence.


The main problem was that you didn't use
fflush(stdin);
While taking an input string with spaces, the buffer does not get cleared
for the next input and considers the previous input for the same.
To solve this problem fflush(stdin) is used to clear the stream/buffer.

Use of fflush(stdin) in C

https://www.geeksforgeeks.org/use-fflushstdin-c/

https://stackoverflow.com/questions/2979209/using-fflushstdin

https://www.quora.com/Why-do-we-use-the-functions-fflush-stdin-and-fflush-stdout-in-c


You didn't give clear names to the variables and that's why you got lost.
I suggest you give the names of the variables much like I wrote.

You have two types of variables, int and string whose length is 20 (LEN is 20).

Modify my program according to your needs.

A lot of time is wasted entering data because there is a lot of it.
It would be good to save data to a file and then read again from that file.
I don't know if you can work with the files in C.

C files

https://www.tutorialspoint.com/cprogramming/c_file_io.htm

lets_learn_c_files_with_array_of_int_v1.c

https://pastebin.com/p5mZdKf2

Since more students will be introduced, it would be good
to put the data on one student into one structure
and then work with array of structures.
I don't know how well you know the structures and pointers in C.

C structures

https://www.tutorialspoint.com/cprogramming/c_structures.htm

lets_learn_structures_in_c_v1.c

https://pastebin.com/HN1ZSQGr

For the meny, you have to know Ascii codes of keys
and how to contrlol the keyboard.

http://www.asciitable.com/

key_codes_with_getch()_v1.c
https://pastebin.com/CTb71BSc

keyboard_ascii_codes_with_kbhit()_v1.c
https://pastebin.com/7whsRfyj



    You can find all my C programs at Dragan Milicev's pastebin:

    https://pastebin.com/u/dmilicev

*/

#include <stdio.h>

#define LEN 20          // lenghth of all strings


int main ()
{
     int end=0;         // because it is not the end, yet
     int choice;        // choice from menu
     int StudentsInfo;
     int StudentNo;
     int year;

    char name[LEN];
    char DateOfRegistration[LEN];
    char Surname[LEN];
    char GivenName[LEN];
    char MiddleName[LEN];
    char Program[LEN];
    char Block[LEN];
    char Gender[LEN];
    char CivilStatus[LEN];
    char BirthDate[LEN];
    char BirthPlace[LEN];
    char Religion[LEN];
    char PersonalContactTel[LEN];
    char EmailAddress[LEN];
    char Lrn[LEN];
    char Address[LEN];
    char FathersName[LEN];
    char FathersContact[LEN];
    char MothersName[LEN];
    char MothersContact[LEN];
    char SchoolLastAttended[LEN];
    char YearLastAttended[LEN];
    char GuardiansName[LEN];
    char GuardiansContact[LEN];
    char GuardiansAddress[LEN];
    char EmergencyPersonName[LEN];
    char EmergencyPersonContact[LEN];
    char EmergencyPersonAddress[LEN];

    printf("\n Input your name: ");
    fgets(name,LEN,stdin);

    printf("\n Hi %s welcome to Student information system \n",name);

    while(!end)
    {
          printf("\n Main Menu");
        printf("\n\n 1. Add");
          printf("\n 2. View");
          printf("\n 3. Edit");
          printf("\n 0. End");
        printf("\n Choose operation: ");

        fflush(stdin);          // used to clear the buffer and accept the next string
        scanf("%d",&choice);

        switch (choice)
        {
            case 1:             // Add

                printf("\n New Student Info's Form \n");

                printf("\n Input students Info: ");
                fflush(stdin);  // used to clear the buffer and accept the next string
                scanf("%d",&StudentsInfo);
                printf("\n Date of registration: ");
                fflush(stdin);  // used to clear the buffer and accept the next string
                fgets(DateOfRegistration,LEN,stdin);

                printf("\n Student No. : ");
                fflush(stdin);  // used to clear the buffer and accept the next string
                scanf("%d",&StudentNo);

                printf("\n Surname: ");
                fflush(stdin);  // used to clear the buffer and accept the next string
                fgets(Surname,LEN,stdin);

                printf("\n Given name: ");
                fgets(GivenName,LEN,stdin);

                printf("\n Middle name: ");
                fgets(MiddleName,LEN,stdin);

                printf("\n Program: ");
                fgets(Program,LEN,stdin);

                printf("\n year: ");
                fflush(stdin);  // used to clear the buffer and accept the next string
                scanf("%d",&year);

                printf("\n Block: ");
                fflush(stdin);  // used to clear the buffer and accept the next string
                fgets(Block,LEN,stdin);

                printf("\n Gender: ");
                fgets(Gender,LEN,stdin);

                printf("\n Civil Status: ");
                fgets(CivilStatus,LEN,stdin);

                printf("\n Birth Date: ");
                fgets(BirthDate,LEN,stdin);

                printf("\n Birth Place: ");
                fgets(BirthPlace,LEN,stdin);

                printf("\n Religion: ");
                fgets(Religion,LEN,stdin);

                printf("\n Personal Contact/Tel : ");
                fgets(PersonalContactTel,LEN,stdin);

                printf("\n Email address: ");
                fgets(EmailAddress,LEN,stdin);

                printf("\n LRN: ");
                fgets(Lrn,LEN,stdin);

                printf("\n Address: ");
                fgets(Address,LEN,stdin);

                printf("\n Fathers name: ");
                fgets(FathersName,LEN,stdin);

                printf("\n Fathers Contact: ");
                fgets(FathersContact,LEN,stdin);

                printf("\n Mothers Name: ");
                fgets(MothersName,LEN,stdin);

                printf("\n Mothers Contact: ");
                fgets(MothersContact,LEN,stdin);

                printf("\n Guardian's Name: ");
                fgets(GuardiansName,LEN,stdin);

                printf("\n Guardians Contact: ");
                fgets(GuardiansContact,LEN,stdin);

                printf("\n School Last Attended: ");
                fgets(SchoolLastAttended,LEN,stdin);

                printf("\n Year Last Attended: ");
                fgets(YearLastAttended,LEN,stdin);

                printf("\n Person to Contact in case of Emergency \n");

                printf("\n Guardian's Name: ");
                fgets(GuardiansName,LEN,stdin);

                printf("\n Guardians Contact: ");
                fgets(GuardiansContact,LEN,stdin);

                printf("\n Guardians Address: ");
                fgets(GuardiansAddress,LEN,stdin);

                printf("\n Emergency Person Name : ");
                fgets(EmergencyPersonName,LEN,stdin);

                printf("\n Emergency Person Contact: ");
                fgets(EmergencyPersonContact,LEN,stdin);

                printf("\n Emergency Person Address: ");
                fgets(EmergencyPersonAddress,LEN,stdin);

                break;

            case 2:             // View

                printf("\n Students Information ");

                printf("\n\n Surname: %s",Surname);
                printf("\n Given name: %s",GivenName);
                printf("\n Middle Name: %s",MiddleName);
                printf("\n Program: %s",Program);
                printf("\n Date of registration: %s",DateOfRegistration);
                printf("\n Students Info: %d \n",StudentsInfo);
                printf("\n Student No: %d \n",StudentNo);
                printf("\n Program: %s",Program);
                printf("\n Year: %d \n",year);
                printf("\n Block: %s",Block);
                printf("\n Gender: %s",Gender);
                printf("\n Civil Status: %s",CivilStatus);
                printf("\n BirthDate: %s",BirthDate);
                printf("\n BirthPlace: %s",BirthPlace);
                printf("\n Personal Cel/Tel: %s",PersonalContactTel);
                printf("\n E-mail Address: %s",EmailAddress);
                printf("\n LRN: %s",Lrn);
                printf("\n Address: %s",Address);
                printf("\n\n Father's Name: %s",FathersName);
                printf("\n Fathers Contact: %s",FathersContact);
                printf("\n\n Mother's Name: %s",MothersName);
                printf("\n Mothers Contact: %s",MothersContact);
                printf("\n\n Guardians Name: %s",GuardiansName);
                printf("\n Guardians Contact: %s",GuardiansContact);
                printf("\n\n Person to Contact in Case of Emergency: \n");
                printf("\n Emergency Person Name: %s",EmergencyPersonName);
                printf("\n Emergency Person Contact: %s",EmergencyPersonContact);
                printf("\n Emergency Person Address: %s",EmergencyPersonAddress);

                break;
            case 3:             // Edit
                // edit is like add new student or you must use C structure
                // to choose which student will be edited
                break;
            case 0:             // if pressed key 0
                end=1;          // it is end now
                break;
            default:
                printf("\n You have to choose numbers 0-3 ! \n");
                break;
            } // switch (choice)

    } // while(!end)

    return 0;
} // main()



/*
    OUTPUT:


 Input your name: Dragan

 Hi Dragan
 welcome to Student information system

 Main Menu

 1. Add
 2. View
 3. Edit
 0. End
 Choose operation: 1

 New Student Info's Form

 Input students Info: 2

 Date of registration: 3

 Student No. : 4

 Surname: 5

 Given name: 6

 Middle name: 7

 Program: 8

 year: 9

 Block: 1

 Gender: 2

 Civil Status: 3

 Birth Date: 4

 Birth Place: 5

 Religion: 6

 Personal Contact/Tel : 7

 Email address: 8

 LRN: 9

 Address: 1

 Fathers name: 2

 Fathers Contact: 3

 Mothers Name: 4

 Mothers Contact: 5

 Guardian's Name: 6

 Guardians Contact: 7

 School Last Attended: 8

 Year Last Attended: 9

 Person to Contact in case of Emergency

 Guardian's Name: 1

 Guardians Contact: 2

 Guardians Address: 3

 Emergency Person Name : 4

 Emergency Person Contact: 5

 Emergency Person Address: 6

 Main Menu

 1. Add
 2. View
 3. Edit
 0. End
 Choose operation: 2

 Students Information

 Surname: 5

 Given name: 6

 Middle Name: 7

 Program: 8

 Date of registration: 3

 Students Info: 2

 Student No: 4

 Program: 8

 Year: 9

 Block: 1

 Gender: 2

 Civil Status: 3

 BirthDate: 4

 BirthPlace: 5

 Personal Cel/Tel: 7

 E-mail Address: 8

 LRN: 9

 Address: 1


 Father's Name: 2

 Fathers Contact: 3


 Mother's Name: 4

 Mothers Contact: 5


 Guardians Name: 1

 Guardians Contact: 2


 Person to Contact in Case of Emergency:

 Emergency Person Name: 4

 Emergency Person Contact: 5

 Emergency Person Address: 6

 Main Menu

 1. Add
 2. View
 3. Edit
 0. End
 Choose operation: 0

Process returned 0 (0x0)   execution time : 98.336 s
Press any key to continue.

*/