need help on record data (add,delete) in text file using file IO, structure, function
I'm still learning intro to C language. Currently I'm having problem with my code. The task is to ask user to input information about staff and write them into a text file. The problem occur when:
1) output in text/.exe file display random characters.
2) Data obtained from New_Staff unable to pass into Export_Profile.
3) a new output will overwrite the existing information in the text/.exe file
4) the delete function unable to delete correctly after the first time i delete a staff information in text file.
I would be so happy if I can solve any of these 3 problem
The code is as follows:
Code:#include <stdio.h> #include <stdlib.h> void Menu(); void New_Staff(); void Delete_Staff(); void Export_Profile(); struct element{ char id[20]; char name[20]; char gender[20]; char phone[20]; char email[20]; }profile; int main(void){ //The program will continue running until option 4 selected int a; for(a=0;;a++){ Menu(); } return 0; } void Menu() //Main Menu to select option { int n; printf("\n**********************************************"); printf("\nMAIN MENU-STAFF INFORMATION SYSTEM"); printf("\n**********************************************"); printf("\n1. Add profile Staff Profile"); printf("\n2. Delete Staff Profile"); printf("\n3. Export All Profiles to 'output.txt'"); printf("\n4. Exit"); printf("\n**********************************************"); printf("\nPlease enter your option< 1 / 2 / 3 / 4 >: "); scanf("%d", &n); switch(n){ case 1: New_Staff(); break; case 2: Delete_Staff(); break; case 3: Export_Profile(); break; case 4: printf("\n*** Thanks for using the program! Goodbye. ***"); exit(0); break; default: printf("\nError! Wrong Number is Entered\nPlease Try Again"); break; } } void New_Staff() //Add New Staff Profile { int x; struct element profile; printf("\n===Add New Staff Profile==="); printf("\n\nPlease enter the following staff information."); printf("\n\nStaff ID: "); scanf("%s", &profile.id); printf("Name\t: "); fflush(stdin); fgets(profile.name,20,stdin); for(x=0 ; x<20 ; x++) { if(profile.name[x] == '\n') profile.name[x] = '\0'; } printf("Gender\t: "); scanf("%s", &profile.gender); printf("Phone\t: "); scanf("%s", &profile.phone); printf("Email\t: "); scanf("%s", &profile.email); printf("\nSYSTEM: New Staff Profile is Added Successfully."); } void Delete_Staff() //Delete Staff Profile { FILE *fRead, *fWrite; char *TextFile; char c; int Delete_Id, temp = 1; TextFile="output.txt"; fRead = fopen(TextFile, "r"); c = getc(fRead); while (c != EOF){ printf("%c", c); c = getc(fRead); } rewind(fRead); printf("\nDelete Staff with ID: "); scanf("%d", &Delete_Id); Delete_Id=Delete_Id+1; fWrite = fopen("copy.c", "w"); c = getc(fRead); while (c != EOF) { c = getc(fRead); if (c == '\n') temp++; if (temp != Delete_Id){ putc(c, fWrite); } } fclose(fRead); fclose(fWrite); remove(TextFile); rename("copy.c", TextFile); printf("\nThe contents of file after being modified are as follows:\n"); fRead = fopen(TextFile, "r"); c = getc(fRead); while (c != EOF) { printf("%c", c); c = getc(fRead); } fclose(fRead); } void Export_Profile() //Export Staff Profile to Text { struct element profile; FILE *fPtr; fPtr=fopen("output.txt","w"); FILE *fPtr1; fPtr1=fopen("output.txt","a+"); if (fPtr == NULL) printf("Error in opening file\n"); if (fPtr1 == NULL) printf("Error in opening file\n"); fprintf(fPtr,"%10s %10s %10s %10s %10s","Staff","ID", "Name","Gender","Phone","Email"); fprintf(fPtr1,"\n%10s %10s %10s %10s %10s", profile.id, profile.name, profile.gender, profile.phone, profile.email); printf("\n%10s %10s %10s %10s %10s", "Staff", "ID", "Name", "Gender", "Phone", "Email"); printf("\n%10s %10s %10s %10s %10s", profile.id, profile.name, profile.gender, profile.phone, profile.email); printf("\nSYSTEM: All staff profile have been exported to output.txt file"); fclose(fPtr); fclose(fPtr1); }
I'm sorry for the long code. I not really sure where problem lies.
The output give this:
**********************************************
MAIN MENU-STAFF INFORMATION SYSTEM
**********************************************
1. Add profile Staff Profile
2. Delete Staff Profile
3. Export All Profiles to 'output.txt'
4. Exit
**********************************************
Please enter your option< 1 / 2 / 3 / 4 >: 1
===Add New Staff Profile===
Please enter the following staff information.
Staff ID: 1
Name : Carmen Gray
Gender : Female
Phone : 123-4567890
Email : [email protected]
SYSTEM: New Staff Profile is Added Successfully.
**********************************************
MAIN MENU-STAFF INFORMATION SYSTEM
**********************************************
1. Add profile Staff Profile
2. Delete Staff Profile
3. Export All Profiles to 'output.txt'
4. Exit
**********************************************
Please enter your option< 1 / 2 / 3 / 4 >: 3
Staff ID Name Gender Phone
°²# @Γg╕∙ ∙
SYSTEM: All staff profile have been exported to output.txt file
**********************************************
MAIN MENU-STAFF INFORMATION SYSTEM
**********************************************
1. Add profile Staff Profile
2. Delete Staff Profile
3. Export All Profiles to 'output.txt'
4. Exit
**********************************************
Please enter your option< 1 / 2 / 3 / 4 >: 2
Staff ID Name Gender Phone
°²# @Γg╕∙ .
Delete Staff with ID: 1
The contents of file after being modified are as follows:
Staff ID Name Gender Phone
and the text file display this:
Staff ID Name Gender Phone
øý# @âg¸ù ù
Originally Posted by Nabil Fikri
