Program to demonstrate the getchar function. The program will read data entered via the keyboard. And returns the number of characters entered. Read more about C Programming Language .

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#include <stdio.h>

#define RETURN 'n'   /* n == return in UNIX
        r == return in DOS  */

main()
{
 int count=0;
 puts("Please enter some text.");
 /* Count the letters in the 'stdin'
        buffer.   */
 while ( getchar() != RETURN) count++;

 printf("You entered %d charactersn", count);
}

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