In this program, You will learn How to find largest and smallest digit of a number in C++.

```
int main(){
//statement
}
```

## Example: How to find the largest and smallest digit of a number in C++.

```
#include<iostream>
using namespace std;
int main() {
int n, r, sd = 9, ld = 0;
cout << "Enter a number:";
cin>>n;
while (n > 0) {
r = n % 10;
if (sd > r) {
sd = r;
}
if (ld < r) {
ld = r;
}
n = n / 10;
}
cout << "Largest digit:" << ld;
cout << "\nSmallest digit:" << sd;
return 0;
}
```

#### Output:

```
Enter a number:4323
Largest digit:4
Smallest digit:2
```