getchar

getchar

Read a Character from the Standard Input Stream

Portability: ISO/ANSI C conforming, UNIX compatible

SYNOPSIS
DESCRIPTION
RETURN VALUE
IMPLEMENTATION
EXAMPLE
RELATED FUNCTIONS
SEE ALSO

SYNOPSIS

#include <stdio.h>

int getchar(void);

DESCRIPTION

getchar reads a character from the stream stdin .

RETURN VALUE

getchar returns the next input character or EOF if no character can be read.

IMPLEMENTATION

getchar is a macro that expands into getc(stdin) .

EXAMPLE

#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>

main()
{
   char filename[60];
   int words = 0, lines = 0, bytes = 0;
   int spacing = 1;
   int ch;

   puts("Enter the input file name:");
   memcpy(filename, "tso:", 4);
   gets(filename+4);
   if (freopen(filename, "r", stdin) == 0){
      puts("File could not be opened.");
      exit(EXIT_FAILURE);
   }

      /* Read the file and count bytes, lines, and words. */
   for(;;){
      ch = getchar();
      if (ch == EOF) break;
      ++bytes;
      if (ch == '\n') ++lines;

         /* If the input character is a nonspace character */
         /* after a space character, start a new word.     */
      if (isspace(ch)) spacing = 1;
      else if(spacing){
         spacing = 0;
         ++words;
      }
   }
   printf("The input file contains %d bytes\n", bytes);
   printf("%d lines and %d words.\n", lines, words);
   exit(EXIT_SUCCESS);
}

RELATED FUNCTIONS

getc