# Program 1: Hello World
```cpp
#include <iostream>
int main() {
std::cout << "Hello, World!";
return 0;
}
```
Explanation: This program prints "Hello, World!" to the console.
# Program 2: Addition of Two Numbers
```cpp
#include <iostream>
int main() {
int num1 = 5, num2 = 10, sum;
sum = num1 + num2;
std::cout << "Sum of " << num1 << " and " << num2 << " is: " << sum;
return 0;
}
```
Explanation: Calculates and prints the sum of two numbers.
# Program 3: Factorial Calculation
```cpp
#include <iostream>
int main() {
int n = 5, factorial = 1;
for (int i = 1; i <= n; ++i) {
factorial *= i;
}
std::cout << "Factorial of " << n << " is: " << factorial;
return 0;
}
```
Explanation: Computes and displays the factorial of a given number (`n = 5` in this case).
# Program 4: Check Even or Odd
```cpp
#include <iostream>
int main() {
int num = 6;
if (num % 2 == 0) {
std::cout << num << " is even.";
} else {
std::cout << num << " is odd.";
}
return 0;
}
```
Explanation: Determines if a number is even or odd (`num = 6` in this example).
# Program 5: Simple Interest Calculation
```cpp
#include <iostream>
int main() {
float principal = 1000, rate = 5, time = 2, simple_interest;
simple_interest = (principal * rate * time) / 100;
std::cout << "Simple interest is: " << simple_interest;
return 0;
}
```
Explanation: Calculates and displays simple interest based on principal amount, rate, and time (`principal = 1000`, `rate = 5`, `time = 2` in this example).
These programs demonstrate basic operations and calculations using C++. You can compile and run these programs using a C++ compiler to see their output.
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