Question

C中的随机数猜谜游戏。

如果没有猜到正确的数字，用户在游戏退出之前会进行10次猜测。

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

int main() {
int theNumber;
int userGuess;
int counter = 10;
int lowerBound = 1, upperBound = 100;

// seed function
srand((unsigned)time(NULL));

// generates number between 1 and 100
theNumber = lowerBound + rand() % (upperBound - lowerBound + 1);

printf("Please guess a number (1-100): ");

for (counter = 9; counter <= 10; counter--) {

    // get users guess
    scanf("%d", &userGuess);

    if (userGuess == theNumber) {
        printf("You guessed it! The number was: %d", theNumber);
        break;
    }

    if (userGuess < theNumber && counter >= 1)
        printf("Your guess was too low. You have %d guesses remaining. Guess higher: ", counter);

    if (userGuess > theNumber && counter >= 1)
        printf("Your guess was too high. You have %d guesses remaining. Guess lower: ", counter);

    if (counter == 0) {
        printf("\nYou ran out of guesses. The number was: %d \n", theNumber);
        break;
    }

}

return 0;

}

示例输出：

Please guess a number (1-100): 100
Your guess was too high. You have 9 guesses remaining. Guess lower: 90

如何在第一个printf语句之后添加空格，以使输出看起来像这样？

期望的输出：

Please guess a number (1-100): 100

Your guess was too high. You have 9 guesses remaining. Guess lower: 90

Answer 1

如果用户输入的文字类似于＆＃39;一个＆＃39; ！会发生什么？ 始终检查错误：

if (scanf("%d", &userGuess) != 1){
    printf("incorrect input.\n");
    return 1;
}

如果您需要使用垂直空间printf("\n"); 如果您只需使用一次垂直空间：

if (counter == 9)
    printf("\n");

示例代码：

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

int main() {
    int theNumber;
    int userGuess;
    int counter = 10;
    int lowerBound = 1, upperBound = 100;

    // seed function
    srand((unsigned)time(NULL));

    // generates number between 1 and 100
    theNumber = lowerBound + rand() % (upperBound - lowerBound + 1);

    printf("Please guess a number (1-100): ");

    for (counter = 9; counter <= 10; counter--) {

        // get users guess
        if (scanf("%d", &userGuess) != 1){
            printf("incorrect input.\n");
            return 1;
        }
        //if (counter == 9)
        printf("\n");

        if (userGuess == theNumber) {
            printf("You guessed it! The number was: %d", theNumber);
            break;
        }

        if (userGuess < theNumber && counter >= 1)
            printf("Your guess was too low. You have %d guesses remaining. Guess higher: ", counter);

        if (userGuess > theNumber && counter >= 1)
            printf("Your guess was too high. You have %d guesses remaining. Guess lower: ", counter);

        if (counter == 0) {
            printf("\nYou ran out of guesses. The number was: %d \n", theNumber);
            break;
        }

    }

    return 0;
}

Answer 2

如果您询问这两行之间是否有新的空行，您只需在第一个printf语句后添加printf("\n");即可。

如果你想把空格放在任何地方，请使用printf(" ");这将增加空间。

使用int和while循环打印所需数量的空格或新空行。

示例：

int main()
{
   int i;
   i = 0;
   while (i < 30)
   {
      printf(" ");
      i++;
   }
   printf("X\n");
   return 0;
}

如何在第一个printf语句后添加空格？

2 个答案: