| function
|
purpose
|
| fopen ()
|
Creating a file or opening an existing file
|
| fclose ()
|
Closing a file
|
| fprintf ()
|
Writing a block of data to a file
|
| fscanf ()
|
Reading a block data from a file
|
| getc ()
|
Reads a single character from a file
|
| putc ()
|
Writes a single character to a file
|
| getw ()
|
Reads an integer from a file
|
| putw ()
|
Writing an integer to a file
|
| fseek ()
|
Sets the position of a file pointer to a specified location
|
| ftell ()
|
Returns the current position of a file pointer
|
| rewind ()
|
Sets the file pointer at the beginning of a file
|
|
Program to Write data to a file
|
Output
|
#include<stdio.h>
void main()
{
FILE *fp;
char ch;
clrscr();
fp = fopen("data.txt", "w");
printf("Enter data to File:");
while( (ch = getchar()) != EOF) {
putc(ch, fp);
}
fclose(fp);
}
|
Enter data to File:
Wisdom Materials
|
| Program to read data from a file
|
Output
|
#include<stdio.h>
Void main()
{
FILE *fp;
char ch;
clrscr();
fp = fopen("data.txt","r");
printf("Data from File:");
while( (ch = getc(fp))!= EOF)
printf("%c",ch);
// closing the file pointer
fclose(fp);
}
|
Data from File:
Wisdom Materials
|