# C++ Program to find the largest digit of a number

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

```
The number is: 1234
Largest digit is: 4
```

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

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

#### Output:

```
Enter a number:23412
Largest digit is:4
```