在范围和特定步骤中生成C中的随机数 [英] Generate random number in C within a range and a specific step

问题描述

好的，很可能它将被标记为重复，但是我正在寻找答案，找不到相似的东西. 问题是:我想在特定范围内生成随机数[即min_value到max_value]，并带有特定步骤.对于第一部分，答案是:

OK, most probably it will be marked as duplicated, but I am looking for an answer and cannot find something similar. The question is: I want to generate random numbers within a specific range [i.e. min_value to max_value] and with a specific step. For the first part the answer is:

int random_value = rand() % max_value + min_value;

该步骤如何定义?我想上述解决方案是在步骤1中得出的.对吗?举例来说，如果我想在第2步中生成数字(例如2、4，...，16)，该怎么办?

The step how can I define it? I suppose that the above mentioned solution results in step 1. Correct? And if for example I want to generate the numbers with step 2 (e.g. 2, 4, ..., 16) what should I do?

推荐答案

这应该做您想要的:

int GetRandom(int max_value, int min_value, int step)
{
    int random_value = (rand() % ((++max_value - min_value) / step)) * step + min_value;
    return random_value;
}

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