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

```
while(condition){
//statement
//increment/decrement
}
```

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

```
#include<iostream>
using namespace std;
int main() {
int a, r, fd, ld, sum, rev = 0;
cout << "Enter a number:";
cin>>a;
ld = a % 10;
while (a > 0) {
r = a % 10;
rev = rev * 10 + r;
a = a / 10;
}
fd = rev % 10;
sum = ld + fd;
cout << "Sum of first & last digit:" << sum;
return 0;
}
```

#### Output:

```
Enter a number:324
Sum of first & last digit:7
```