R 编程数据类型转换

Question

 # Assigning a value to the variable my_apples
my_apples <- 5 

# Fixing the assignment of my_oranges
my_oranges <- "six" 

# Creating the variable my_fruit and printing it out
my_fruit <- my_apples + my_oranges 
my_fruit

尝试通过将文本值分配给变量 my_oranges 来添加“apples”和“oranges”。 请帮我解决这个问题。

Answer 1

x<-c(1:100)
x[41:50] will give you the output. everything is a list in r. 

Answer 2

您不能将数字值和文本值相加。如果两个变量都是数字/整数，您可以总结这些值。如果两个变量都是字符串，你可以使用 paste() 来添加它们

my_apples <- 5 


# Fixing the assignment of my_oranges
my_oranges <- 6

# Creating the variable my_fruit and printing it out
my_fruit <- my_apples + my_oranges 


my_apples <- "five"


# Fixing the assignment of my_oranges
my_oranges <- "six"

# Creating the variable my_fruit and printing it out
my_fruit <- paste0(my_apples,my_oranges) 

您可以看到 ?paste 函数并查看折叠和 sep 参数