**The Program in C++ Program to check whether a number is a Strong Number or not is given below:**

```
#include <iostream>
#include <cmath>
using namespace std;
int factorial(int n) {
int result = 1;
for (int i = 1; i <= n; i++) {
result *= i;
}
return result;
}
int sum_of_factorials(int n) {
int sum = 0;
while (n != 0) {
int digit = n % 10;
sum += factorial(digit);
n /= 10;
}
return sum;
}
bool is_Strong(int n) {
return n == sum_of_factorials(n);
}
int main() {
int n;
cout << "Hello Codeauri Family,Enter a number here to check whether the number is strong number or not!: \n";
cin >> n;
if (is_Strong(n)) {
cout << n << " is a Strong Number" << endl;
} else {
cout << n << " is not a Strong Number" << endl;
}
return 0;
}
```

## Output:

Hello Codeauri Family,Enter a number here to check whether the number is strong number or not!:

145

145 is a Strong Number

## Pro-Tips**💡**

The program defines two functions, `factorial`

and `sum_of_factorials`

.

The `factorial`

function takes an integer `n`

as input and returns its factorial.

The `sum_of_factorials`

function takes an integer `n`

as input and returns the sum of the factorials of its digits.

The `is_Strong`

function takes an integer `n`

as input and returns a Boolean indicating whether `n`

is a Strong number or not.

It does this by calling the `sum_of_factorials`

function with `n`

as input and comparing the result with `n`

.

In the `main`

function, the program prompts the user to enter a number and stores the input in the `n`

variable.

Then it calls the `is_Strong`

function with `n`

as input and prints whether `n`

is a Strong number or not based on the result.

**Learn C-Sharp ↗**

C-sharp covers every topic to learn about C-Sharp thoroughly.

**Learn C Programming ↗**

C-Programming covers every topic to learn about C-Sharp thoroughly.

**Learn C++ Programming↗**

**Learn C++ Programming↗**

C++ covers every topic to learn about C-Sharp thoroughly.