[已解决]S1E41课后题（宏定义问题）

焦糖橙子

1. 请补充下面代码，添加一个宏定义，让程序可以统计 COUNTS 参数的个数。
我用DEV有报错
D:\C语言程序设计与数据结构\S1E41\S1E41.cpp        [Error] expected ')' before 'Apple'
是说说我缺少括号？但是我看也没少啊。代码也是参考答案，为什么会这样啊？
代码如下：

#include <stdio.h>

#define ARGUMENTS(A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, ...) A11
#define COUNTS(...) ARGUMENTS(FISHC, ## __VA_ARGS__, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0)

int main(void)
{
        printf("COUNTS()有 %d 个参数。\n", COUNTS());
        printf("COUNTS(1, 2, 3)有 %d 个参数\n", COUNTS(1, 2, 3));
        printf("COUNTS("Apple", "Banana", "Cat", "Dog")有 %d 个参数\n", COUNTS("Apple", "Banana", "Cat", "Dog"));

        return 0;
}

最佳答案

月排行榜 / 总排行榜

万千只cnm

2021-8-7 11:14:26

   printf("COUNTS()有 %d 个参数。\n", COUNTS());
        printf("COUNTS(1, 2, 3)有 %d 个参数\n", COUNTS(1, 2, 3));
    printf("COUNTS(""Apple"", ""Banana"", ""Cat"", ""Dog"")有 %d 个参数\n",COUNTS("Apple", "Banana", "Cat", "Dog") );

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万千只cnm

   printf("COUNTS()有 %d 个参数。\n", COUNTS());
        printf("COUNTS(1, 2, 3)有 %d 个参数\n", COUNTS(1, 2, 3));
    printf("COUNTS(""Apple"", ""Banana"", ""Cat"", ""Dog"")有 %d 个参数\n",COUNTS("Apple", "Banana", "Cat", "Dog") );