I CANT UNDERSTAND THE EXECUTION OF THE PROGRAM.

Question

calc <- function(a, b) {
res <- 0
for(x in a:b) {
res <- res + x
}
return(res)
}
print(calc(4, 7))

Answer 1

What part exactly don't you understand?

The for-loop iterates over the range of [a; b]. On each iteration the current number is added up to result.

Answer 2

You can re-read the lesson about loops as often as you like.

4+5+6+7 = 22

Answer 3

Thank you so much Lisa for Explanation..

Answer 4

The output is 22,i cant understand how the loop execute and how the output is 22.