Read set of chars from file

The fscanf() function is used to read set of characters from file. It reads a word from the file and returns EOF at the end of file.

Syntax

Parameter

stream − This is the pointer to a FILE object that identifies the stream.

format − This is the C string that contains one or more of the following items − Whitespace character, Non-whitespace character and Format specifiers.

Return value

This function returns the number of input items successfully matched , else 0

Program: reading data from file using fscanf

#include <stdio.h>
#include<stdlib.h>
int main()
{
 int n;
 FILE *fptr;
 if ((fptr=fopen("sample.txt","r"))==NULL)
 {
     printf("Cannot Open File ");
     exit(1); 
}
 fscanf(fptr,"%d",&n);
 printf("Value in file is=%d",n); 
 fclose(fptr);
}

Input

Output

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