How does the R language represent the first random number?

In R language, you can use the following code to generate a random number:

set.seed(123)  # 设置种子以保证结果的可复现性
random_number <- runif(1)  # 生成一个0到1之间的随机数
random_number

This code first sets a seed value using the set.seed() function to ensure that the random numbers generated each time are the same. It then generates a random number using the runif() function with a parameter of 1. Finally, it assigns the generated random number to a variable called random_number and prints it out.