C++入门及简单例子_3

#include 

// 打印 "Hello, World!" 到控制台
int main() {
    std::cout << "Hello, World!" << std::endl;
    return 0;
}

#include 

// 创建一个变量，并打印它的值
int main() {
    int number = 42;
    std::cout << "The value of the number is " << number << std::endl;
    return 0;
}

#include 

// 进行加法和乘法运算，并打印结果
int main() {
    int a = 10;
    int b = 5;
    int sum = a + b;
    int product = a * b;
    std::cout << "The sum is " << sum << std::endl;
    std::cout << "The product is " << product << std::endl;
    return 0;
}

#include 

// 使用循环打印数字序列
int main() {
    for (int i = 1; i <= 10; i++) {
        std::cout << i << " ";
    }
    std::cout << std::endl;
    return 0;
}

#include 

// 检查一个数是否是偶数
int main() {
    int num = 12;
    if (num % 2 == 0) {
        std::cout << num << " is an even number." << std::endl;
    } else {
        std::cout << num << " is an odd number." << std::endl;
    }
    return 0;
}

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