c - 如何在第一个 printf 语句后添加一个空格？

Question

C语言的随机数猜谜游戏。

用户有 10 次猜测，如果没有猜对，游戏将退出。

#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 语句后添加一个空格，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

如果用户输入像“一”这样的文本!会发生什么？
始终检查错误:

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

如果您需要垂直空间，请使用 printf("\n");。
如果您只需要一次垂直空间，请使用:

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;
}