Beginning R

Starting with creating our data file data.txt:

12
54
7
332
54
1
0

We start by defining an integer, total to be zero before the loop. Inside the loop we add the line of code total <- total + number which increases the variable total by the value in the variable number. Finally we print the total:

lines <- readLines(file("data.txt"))

total <- 0

for (line in lines){
  number <- as.numeric(line)
  total <- total + number
}

print(paste("Sum of all values is:", total))

Rscript file.R

[1] "Sum of all values is: 460"