# R Program to find the sum of first and last digit of a number

In this program, You will learn how to find the sum of first and last digit of a number in R.

`1234 = 1 + 4 = 5`

## Example: How to find the sum of first and last digit of a number in R

```
{
rev = 0
n = as.integer(readline(prompt = "Enter a number :"))
last = n %% 10
while (n > 0) {
r = n %% 10
rev = rev * 10 + r
n = n %/% 10
}
fd = rev %% 10
sum = last + fd
print(paste("The sum of first and last digit is :", sum))
}
```

#### Output:

```
Enter a number :234
[1] "The sum of first and last digit is : 6"
```