Question

我是C编程的新手，有些日子我会开始一些私人课程，当我怀疑时我正在训练，这实际上就是代码：

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

int main(void)
{
    char yesorno[60]; //array, every cell contains a character

    //But here initialize your array

    printf("Do you want to start?\n");
    scanf("%s", &yesorno);
    if (strcmp(yesorno, "yes")==0)
    {
        int face, roll, frequency1 = 0, frequency2 = 0,
                        frequency3 = 0, frequency4 = 0,
                        frequency5 = 0, frequency6 = 0;

        for ( roll = 1; roll <= 6000; roll++ )
        {
            face = 1 + rand() % 6;

            switch ( face )
            {
            case 1:
                frequency1++;
                break;
            case 2:
                frequency2++;
                break;
            case 3:
                frequency3++;
                break;
            case 4:
                frequency4++;
                break;
            case 5:
                frequency5++;
                break;
            case 6:
                frequency6++;
                break;
            }
        }
        printf( "%s%13s\n", "Face", "Frequency" );
        printf( " 1%13d\n", frequency1 );
        printf( " 2%13d\n", frequency2 );
        printf( " 3%13d\n", frequency3 );
        printf( " 4%13d\n", frequency4 );
        printf( " 5%13d\n", frequency5 );
        printf( " 6%13d\n", frequency6 );

        printf("Do you know which one has more chances?\n");


        if (frequency1 > frequency2, frequency3, frequency4, frequency5, frequency6)
        {
            printf( " 1%13d has a better chance\n", frequency1 );
        }
        else if (frequency2 > frequency1, frequency3, frequency4, frequency5, frequency6)
        {
            printf( " 2%13d has a better chance\n", frequency2 );

        }
        else if (frequency3 > frequency1, frequency2, frequency4, frequency5, frequency6)
        {
            printf( " 3%13d has a better chance\n", frequency3 );
        }
        else if (frequency4 > frequency1, frequency3, frequency2, frequency5, frequency6)
        {
            printf( " 4%13d has a better chance\n", frequency4 );
        }
        else if (frequency5 > frequency1, frequency3, frequency4, frequency2, frequency6)
        {
            printf( " 5%13d has a better chance\n", frequency5 );
        }
        else if (frequency6 > frequency1, frequency3, frequency4, frequency5, frequency2)
        {
            printf( " 6%13d has a better chance\n", frequency6 );
        }
    }
    else
    {
        printf("then go bay bay");
    }


return 0;

}

这是我的问题＆＃34;：

我使用普通代码并在训练时添加了一些功能，如何比较2个字符串，这没关系，但现在我如何比较1变量大于其他5的变量以及为什么给它一个错误？

我认为我应该把它从第一个IF语句中删除，但这样做时它表示变量没有定义..所以我不得不以某种方式导入它们。

我正在使用code :: blocks

感谢大家！

Answer 1

您在该代码中想要的是将每个频率与剩余的五个频率进行比较为 -

if (frequency1 > frequency2, frequency3, frequency4, frequency5, frequency6)

但是逗号运算符在c编程中具有最低优先级，因此该代码归结为

if ((frequency1 > frequency2), frequency3, frequency4, frequency5, frequency6)

所以，实际上发生的事情是将frequency1与frequency2进行比较，然后使用频率为6的最右边的变量值来检查始终返回true的if条件，从而首先如果语句将被执行

所以你可以这样做

if( (frequency1 > frequency2) && (frequency1 > frequency3) && (frequency1 > frequency4) && (frequency1 > frequency5) && (frequency1 > frequency6))

我们在这里做的是将每个频率值与frequency1值进行comap，然后对每个结果进行AND运算。

哪个变量在C

1 个答案: