Question

Consider the following R expressions:

string1 = c("A", "B", "C")

and

string2 = str_c("A", "B","C")

What is the value of the expression below?

length(string1)*length(string2) + str_length(string2)

answer: 6

But I don't know why the answer is 6.

I don't understand how c function and str_c function work.

Answer 1

Answers:

>= a = c("A","B","C")

output- "A" "B" "C"

len(a) = 3

>= b = str_c("A","B","C")

output- "ABC"

len(b)= 1

In c() function the output print as without comma as well as separate string.

In str_c() function the output print as in only one string, without comma as well as Removing space.

Here,

len (a) * len (b) + len(b) = 3 * 1 + 1 = 4

Here the answer is 4 not 6.