Files
This document was uploaded by user and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this DMCA report form. Report DMCA
Overview
Download & View Files as PDF for free.
More details
- Words: 478
- Pages: 5
Computer Science (083)
File Handling
Text Files #include #include //Text File Handling Program #include #include <stdio.h> void Create() //Function to create new Text File { char Ch; cout<<"Delete the existing data(if any),Are You Sure (Y/N)?";cin>>Ch; if (toupper(Ch)=='Y') { fstream Fil; char Lin[80],Q; Fil.open("STUD.TXT",ios::out); do { cout<<”Enter Text”; gets(Lin); Fil<>Q; } while (Q==’Y’); Fil.close(); } } void AddAtEnd() //Function to Add new lines to an existing Text File { fstream Fil; char Lin[80],Q; Fil.open("STUD.TXT",ios::app); do { cout<<”Enter Text”;gets(Lin); Fil<>Q; } while (Q==’Y’); Fil.close(); } void Display() //Function to Display the content { //of a Text File fstream Fil; char Lin[80]; Fil.open("STUD.TXT",ios::in); while (Fil.getline(Lin,80)) cout<
25
Computer Science (083) {
File Handling //of lines in a Text File
fstream Fil; Fil.open("STUD.TXT",ios::in); char Lin[80];int Cnt=0; while (Fil.getline(Lin,80)) Cnt++; Fil.close(); return Cnt; } void main() { clrscr(); char Choice; do { cout<<"The no.of Lines in file:"<>Choice; switch(Choice) { case 'C':Create();break; case 'A':AddAtEnd();break; case 'D':Display();break; } } while (Choice!='Q'); }
By Nita Arora
26
Computer Science (083)
File Handling
Binary Files #include //** BINARY FILE HANDLING ** #include<stdio.h> #include struct stud { int rno; char name[10]; int marks; }; void create() // FUNCTION TO CREATE NEW FILE { stud rec; fstream fl; fl.open("test.dat", ios::out|ios::binary); for (int i = 1;i<=4;i++) { cout <<"r.no. : "; cin>>rec.rno; cout <<"name : " ; gets(rec.name); cout <<"marks : " ; cin>>rec.marks; fl.write((char * )&rec,sizeof(rec)); } fl.close(); } void addatend() // FUNCTION TOADD NEW RECORDS { stud rec; // AT END OF THE FILE fstream fl; char Q; fl.open("test.dat", ios::app | ios::binary); do { cout <<"\nEnter The Record : \n\n"; cout <<"r.no. : "; cin>>rec.rno; cout <<"name : " ; gets(rec.name); cout <<"marks : " ; cin>>rec.marks; fl.write((char * )&rec,sizeof(rec)); cout <<"\nMore :";cin>>Q; } while(Q=='Y'); fl.close(); } By Nita Arora
27
Computer Science (083)
File Handling
void display() // FUNCTION TO DISPLAY ALL RECORDS { stud rec; fstream fl; fl.open("test.dat", ios::in); fl.read((char * )&rec,sizeof(rec)); while (fl) //or while (!fl.eof()) { cout <<"\nr.no. : "<>r; fl.open("test.dat", ios::in); fl.read((char * )&rec,sizeof(rec)); while (fl)// while (!fl.eof()) { if (rec.rno==r) { cout <<"\nr.no. : "<
By Nita Arora
28
Computer Science (083)
File Handling
void main() { char choice; do{ clrscr(); cout<<"\n\n\tC:Create\n\tA:Add at end\n\tD:Display"; cout<<"\n\tS:Search\n\tQ:Quit\n\t";cin>>choice; switch(choice) { case 'C' : create();break; case 'A' : addatend();break; case 'D' : display();break; case 'S' : search();break; } } while(choice!='Q'); }
By Nita Arora
29
File Handling
Text Files #include
25
Computer Science (083) {
File Handling //of lines in a Text File
fstream Fil; Fil.open("STUD.TXT",ios::in); char Lin[80];int Cnt=0; while (Fil.getline(Lin,80)) Cnt++; Fil.close(); return Cnt; } void main() { clrscr(); char Choice; do { cout<<"The no.of Lines in file:"<
By Nita Arora
26
Computer Science (083)
File Handling
Binary Files #include
27
Computer Science (083)
File Handling
void display() // FUNCTION TO DISPLAY ALL RECORDS { stud rec; fstream fl; fl.open("test.dat", ios::in); fl.read((char * )&rec,sizeof(rec)); while (fl) //or while (!fl.eof()) { cout <<"\nr.no. : "<
By Nita Arora
28
Computer Science (083)
File Handling
void main() { char choice; do{ clrscr(); cout<<"\n\n\tC:Create\n\tA:Add at end\n\tD:Display"; cout<<"\n\tS:Search\n\tQ:Quit\n\t";cin>>choice; switch(choice) { case 'C' : create();break; case 'A' : addatend();break; case 'D' : display();break; case 'S' : search();break; } } while(choice!='Q'); }
By Nita Arora
29
