c - "Guess The Number"在 C 语言中但 If 语句不能正常工作

Question

我有一个 C 语言程序，用户运行它来玩“猜数字”游戏。它启动时运行正常，但在用户输入 2 个数字(1 个用于初始，1 个用于重试)后，程序会在尝试次数有限时重复。

这是我的程序代码:

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

int main(void)
{
    //----Guess a Number Game.-----------------------------------------
    // srand and rand needs the #include <stdlib.h> library

    srand(time(NULL)); //seeding the guess a number game with the system time, so the guess a # game always starts at a different point.
    int guess;
    int correctnum;
    correctnum = rand();

    printf("Enter a number:");
    scanf("%i",&guess);

    if(guess>correctnum)  // If aa is greater than bb AND aa is greater than cc.
    { 
      printf("Please enter another number, lower this time!");
      scanf("%i",&guess);
      main();
    }

    else if (guess<correctnum)
    {
      printf("Please enter another number, higher this time!");
      scanf("%i",&guess);
      main();
    }

    else if (guess==correctnum)
    {
      printf("You are a WINNER!\n");
      printf("You guessed the number right and it was %i!\n",correctnum);
    }
  int repeat;
  printf("Would you like to play again? 1=Yes and 2=No.");
  scanf("%i",&repeat);

  if(repeat==1)
  {
    main();
  }
  if(repeat==2)
  {
    printf("Hope you had a good time playing the game! See you soon!\n");
    return 0;
  }
}

Answer 1

不要递归调用main()。您需要的是一个简单的循环。像这样的东西:

int main(void) {
    srand(time(NULL));
    int correctnum = rand();
    int guess;
    int done = 0;

    while (! done) {
        printf("Enter a number:");
        scanf("%i",&guess);

        if (guess>correctnum) { 
            printf("Please enter another number, lower this time!");
        } else if (guess<correctnum) {
            printf("Please enter another number, higher this time!");
        } else /* if (guess==correctnum) */ {
            printf("You are a WINNER!\n");
            printf("You guessed the number right and it was %i!\n",correctnum);

            done = 1;
        }
    }
}

您可能也应该检查 scanf() 中的错误，但首先要注意的事情。