program4_07.c

C语言入门经典一书的所有代码。书上面的所有代码均在此。希望大家喜欢

/* Program 4.7  A Guessing Game */
#include <stdio.h>

int main(void)
{
  int chosen = 15;                    /* The lucky number            */
  int guess = 0;                      /* Stores a guess              */
  int count = 3;                      /* The maximum number of tries */

  printf("\nThis is a guessing game.");
  printf("\nI have chosen a number between 1 and 20"
                                     " which you must guess.\n");

  for( ; count>0 ; --count)
  {
    printf("\nYou have %d tr%s left.", count, count == 1 ? "y" : "ies");
    printf("\nEnter a guess: ");      /* Prompt for a guess  */
    scanf("%d", &guess);              /* Read in a guess     */

    /* Check for a correct guess */
    if (guess == chosen)
    {
      printf("\nYou guessed it!\n");
      return 0;                       /* End the program     */
    }

    /* Check for an invalid guess */
    if(guess<1 || guess > 20)
      printf("I said between 1 and 20.\n ");
    else
      printf("Sorry. %d is wrong.\n", guess);
  }
  printf("\nYou have had three tries and failed. The number was %d\n",
                                                                  chosen);
  return 0;
}