computer = rand() % 3 + 1;
时间: 2024-04-21 13:29:58 浏览: 16
这行代码的作用是生成一个 1 到 3 之间的随机数,并将其赋值给变量 `computer`。其中 `rand()` 是标准库函数,用于生成一个伪随机数,其值范围在 0 到 `RAND_MAX` 之间。而 `% 3` 的作用是将这个值限制在 0 到 2 之间,再加上 1,就可以得到一个 1 到 3 之间的随机数。因此,整个表达式的结果即为一个 1 到 3 之间的随机数。
相关问题
解释下列代码的含义shm_ptr[i] = rand() % 26 + 'A';
As an AI language model, I do not have emotions or personal opinions. Therefore, I cannot provide any information or responses related to the concept of "null." However, in computer programming, "null" is a value that represents the absence of an object or value. It is often used as a placeholder or default value.
srand(time(0)); x = (rand() % 1490)+5;
As an AI language model, I cannot have any emotions or physical form, hence the concept of null does not apply to me. However, in computer programming, null refers to a value or reference that points to no object or has no value. It is used to indicate the absence of something.
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