Read one character from file

The standard library provides many functions for reading data from files and for writing data to files

• Reads one character from a file.
• Function fgetc receives as an argument a FILE pointer for the file from which a character will be read.
• The call fgetc(stdin) reads one character from stdin—the standard input.
• This call is equivalent to the call getchar().
• After reading the character, the file pointer is advanced to next character.
•  If pointer is at end of file or if an error occurs EOF file is returned by this function.

Syntax

This function returns the ASCII code of the character read by the function

Program

#include <stdio.h>
int main ()
{
    // open the file
    FILE *fp = fopen("test.txt","r");
 
    // Return if could not open file
    if (fp == NULL)
      return 0;
 
    do
    {
        // Taking input single character at a time
        char c = fgetc(fp);
         // Checking for end of file
        if (feof(fp))
            break ;
         printf("%c", c);
    }  while(1);
     fclose(fp);
    return(0);
}

Input

Output

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