C programming file handling
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This document contains code snippets for opening, writing, reading, and closing files in C programming language. The snippets demonstrate opening files in read and write modes, getting input from the user and writing it to files, reading from files and printing the output, and checking for errors when opening files.
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![#include<conio.h>
void main()
{
FILE *fp;
char s[100];
fp=fopen("text.txt","w");
if(fp==NULL)
{
puts("cannot open a file");
exit(1);
}
printf("Enter a text (type end to stop):n");
while(strcmp(gets(s),"end")!=0)
{
fputs(s,fp);
}
fclose(fp);
fp=fopen("text.txt","r");
if(fgets(s,10,fp)!=NULL)
{
printf("%s",s);
}
}
EXTRA](https://image.slidesharecdn.com/c-programmingfilehandling-141101095343-conversion-gate02/85/C-programming-file-handling-10-320.jpg)
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C programming file handling
- 2. EXTRA
- 3. EXTRA
- 4. EXTRA
- 5. #include<stdio.h> void main() { char ch; FILE *fptr; fptr =fopen("c:myfile.txt","a"); printf("Enter the data to be stored in a filen"); while((ch=getchar())!=EOF) { fputc(ch,fptr); } fclose(fptr); fptr=fopen("c:myfile.text","r"); while((ch=fgetc(fptr))!=EOF) { printf("%c",ch); } fclose(fptr); } EXTRA
- 6. EXTRA
- 7. #include<stdio.h> void main() { char ch; FILE *fp; fp=fopen("sample.txt","w"); printf("Input a character::n"); while((ch=fgetc(stdin))!=EOF) { fputc(ch,fp); } fclose(fp); fp=fopen("sample.txt","r"); while((ch=fgetc(fp))!=EOF) printf("%c",ch); } EXTRA
- 8. EXTRA
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- 10. #include<conio.h> void main() { FILE *fp; char s[100]; fp=fopen("text.txt","w"); if(fp==NULL) { puts("cannot open a file"); exit(1); } printf("Enter a text (type end to stop):n"); while(strcmp(gets(s),"end")!=0) { fputs(s,fp); } fclose(fp); fp=fopen("text.txt","r"); if(fgets(s,10,fp)!=NULL) { printf("%s",s); } } EXTRA