當我的隨機數大於我寫的數字時，為什么我的計數變為 0？

Question

我為一個生成隨機數的游戲編寫了 C 代碼，用戶必須猜測正確的數字。 因此，每當我寫一個數字並且它大於隨機數時，我的代碼就會按原樣執行。 但是，當我寫一個小於隨機數的數字時，計數變量變為零，而不是將計數值減 1。我不知道我做錯了什么？ 我附上了可以看到問題的輸出圖像。

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

main()
{
    time_t t;
    int a,count=5;
    srand((unsigned)time(&t));
    int randomnumber=rand()%21;
    printf("This is a guessing game, Only 5 tries are left\n");
    printf("enter the number: ");
    scanf("%d",&a);
    printf(" \n");
    if (a>=20){
        printf("ERROR!! Enter number only between 0-20\n");
    }

    printf("You only have %d tries left\n",count);
    printf("enter number only between 0-20: ");
    scanf("%d",&a);
    printf(" \n");
    if (a==randomnumber){
        printf("You guessed it correctly, YOU WIN!!\n");
    }
    else{
        for(count=4;count>=1;count--)
        {
            if (a>randomnumber){
                printf("My number is smaller than that\n");
                printf("You only have %d tries left\n",(count));
                printf("enter number again: ");
                scanf("%d",&a);
                printf(" \n");
            }
        }
        if (a<randomnumber){
            printf("My number is greater than that\n");
            printf("You only have %d tries left\n",(count));
            printf("enter number again: ");
            scanf("%d",&a);
            printf(" \n");
        }
        if (a==randomnumber){
            printf("You guessed it correctly, YOU WIN!!\n");
        }
    }
    if (a!=randomnumber)
    {
        printf("You LOOSE!!, the Number was %d",randomnumber);
    }
    return 0;
}

Answer 1

您對a < randomnumber和a == randomnumber的測試不在for循環內。 因此，您只能在一直數到0后檢查它們。

您需要將所有測試放入循環中。 您還應該使用else if這樣您就不會檢查他們在同一次迭代中輸入的新數字（因為您還沒有減少count ）。

當他們猜到數字時，您需要跳出循環。

組織它的最簡單的方法是從if塊中取出所有提示輸入下一個數字的代碼，因為它對於小於和大於是相同的。 if塊只是打印錯誤的方式，並在他們獲勝時爆發。

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

main()
{
    time_t t;
    int a,count=5;
    srand((unsigned)time(&t));
    int randomnumber=rand()%21;
    printf("This is a guessing game, Only 5 tries are left\n");
    printf("enter the number: ");
    scanf("%d",&a);
    printf(" \n");
    if (a>=20){
        printf("ERROR!! Enter number only between 0-20\n");
    }

    printf("You only have %d tries left\n",count);
    printf("enter number only between 0-20: ");
    scanf("%d",&a);
    printf(" \n");
    if (a==randomnumber){
        printf("You guessed it correctly, YOU WIN!!\n");
    }
    else{
        for(count=4;count>=1;count--)
        {
            if (a>randomnumber) {
                printf("My number is smaller than that\n");
            } else if (a<randomnumber) {
                printf("My number is greater than that\n");
            } else {
                printf("You guessed it correctly, YOU WIN!!\n");
                break;
            }
            printf("You only have %d tries left\n",(count));
            printf("enter number again: ");
            scanf("%d",&a);
            printf(" \n");
        }
    }
    if (a!=randomnumber)
    {
        printf("You LOOSE!!, the Number was %d",randomnumber);
    }
    return 0;
}