C File Handling Programs

Reading File Character By Character

Question: 1
Write a C program to create a file, store text into it and further read the contents character by character and display the contents?
Note: File named “hello” is created

#include<stdio.h>
 #include<conio.h>
 void main()
 {
 FILE *fp;
 char ch;
 clrscr();
 fp=fopen("hello","w");
 if(fp==NULL)
 {
   printf("Unable to open the file\n");
   getch();
   return;
 }
 printf("Enter text to store in the file,to end press ^z\n");
 while((ch=getchar())!=EOF)
 {
   putc(ch,fp);
 }
 fclose(fp);
  
 printf("The contents of the file are \n");
 fp=fopen("hello","r");
 if(fp==NULL)
 {
   printf("Unable to open the file\n");
   getch();
   return;
 }
 while((ch=getc(fp))!=EOF)
 {
 printf("%c",ch);
 }
 fclose(fp);
 getch();
 } 

2nd methods
Note: this program is same as above. The only difference is we are taking for the file name to create from the user.

#include<stdio.h>
 #include<conio.h>
 void main()
 {
 FILE *fp;
 char ch;
 clrscr();
 fp=fopen("hello","w");
 if(fp==NULL)
 {
   printf("Unable to open the file\n");
   getch();
   return;
 }
 printf("Enter text to store in the file,to end press ^z\n");
 while((ch=getchar())!=EOF)
 {
   putc(ch,fp);
 }
 fclose(fp);
  
 printf("The contents of the file are \n");
 fp=fopen("hello","r");
 if(fp==NULL)
 {
   printf("Unable to open the file\n");
   getch();
   return;
 }
 while((ch=getc(fp))!=EOF)
 {
 printf("%c",ch);
 }
 fclose(fp);
 getch();
 } 

Question: 2
Write a C program to take input for a filename to create and store text into it?
Note: In this program, we are only creating a file and storing data into it?

#include<stdio.h>
 #include<conio.h>
 void main()
 {
 FILE *fp;
 char ch,fname[15];
 clrscr();
 printf("Enter name of the file to create ");
 scanf("%s",fname);
 fp=fopen(fname,"w");
 if(fp==NULL)
 {
   printf("Unable to open the file\n");
   getch();
   return;
 }
 printf("Enter text to store in the file,to end press ^z\n");
 while((ch=getchar())!=EOF)
 {
   putc(ch,fp);
 }
 fclose(fp);
 getch();
 } 

Question: 3
Write a C program to take input for a filename to read. Further, read the contents of the file character by character and them?
Note: Contents of any text file can be displayed.

#include<stdio.h>
 #include<conio.h>
 void main()
 {
 FILE *fp;
 char ch,fname[15];
 clrscr();
 printf("Enter name of the file to read ");
 scanf("%s",fname);
 fp=fopen(fname,"r");
 if(fp==NULL)
 {
   printf("Unable to open the file\n");
   getch();
   return;
 }
 while((ch=getc(fp))!=EOF)
 {
 printf("%c",ch);
 }
 fclose(fp);
 getch();
 } 

Number Of Visitors

0270424