#include <iostream>
using namespace std;
int main() {
// Declare variables with Indian names
int priya_age = 5;
long long factorial = 1; // Use long long to handle larger factorials
// Calculate factorial using a loop
for (int i = 1; i <= priya_age; ++i) {
factorial *= i; // Multiply factorial by each number from 1 to priya_age
}
cout << “The factorial of ” << priya_age << ” is ” << factorial << endl;
return 0;
}
Output:
The factorial of 5 is 120
Here’s a step-by-step explanation of the code:
1. Header and Namespace:
- #include <iostream>: Includes the iostream header for input/output operations.
- using namespace std;: Brings the std namespace into scope for convenient use of elements like cin, cout, and endl.
2. Main Function:
- int main(): The main function where program execution begins.
3. Variable Declaration:
- int priya_age = 5;: Declares an integer variable named priya_age and initializes it with the value 5 (representing Priya’s age).
- long long factorial = 1;: Declares a long long variable named factorial to store the factorial result. It’s initialized to 1 because the factorial of any number multiplied by 1 is that number itself.
4. Factorial Calculation:
- for (int i = 1; i <= priya_age; ++i) { … }: This loop iterates from 1 up to the value of priya_age.
- factorial *= i;: Inside the loop, the current value of factorial is multiplied by the loop counter i. This effectively calculates the factorial by multiplying consecutive numbers from 1 up to priya_age.
5. Output:
- cout << “The factorial of ” << priya_age << ” is ” << factorial << endl;: Prints the calculated factorial to the console, along with a descriptive message.
6. Return Statement:
- return 0;: Indicates successful program termination.
