这道题是一道基础题！！

在 C++ 中，"Hello, World!" 程序是学习这门语言的经典入门示例，它展示了 C++ 程序的基本结构和输出功能。下面是具体实现及详细讲解：

这里有三种做法：

1正常输出

#include <bits/stdc++.h>
using namespace std;

int main() {
	cout << "Hello,World!";
	return 0;
}

2最短输出

#include<cstdio>
main(){printf("Hello,World!");}

3字符串做法

#define NDEBUG
#import <bits/stdc++.h>
#ifdef __linux__
#endif
using namespace std;
using std::cin, std::cout;
using i64 = signed long long;
#define false 0
typedef signed long long IntPtr;
IntPtr i;

main(i64) {
#ifdef __linux__
	std::ios(false), cin.tie(nullptr), cout.tie(nullptr);
	ios::sync_with_stdio(0);
	cin.tie(nullptr);
	char s[12] = {'h', 'e', 'l', 'l', 'o', ',', 'w', 'o', 'r', 'l', 'd', '!'};
	for (i = 0; i < 12; ++i) {
		if (i == 0 || i == 6) {
			if (s[i] >= 'a' && s[i] <= 'z') {
				s[i] -= 32;
			}
		}
	}

	for (i = 0; i < 12; i++) {
		if (i == 5) {
			cout << s[i];
		} else {
			cout << s[i];
		}
	}

	cout << endl;
#endif
	return false;
}

4字符瞎做法

#define NDEBUG
#import <bits/stdc++.h>
#ifdef __linux__
#endif
using namespace std;
using std::cin, std::cout;
using i64 = signed long long;
#define false 0
typedef signed long long IntPtr;
IntPtr n;

main(i64) {
#ifdef __linux__
#endif
	std::ios(false), cin.tie(nullptr), cout.tie(nullptr);
	ios::sync_with_stdio(0);
	cin.tie(nullptr);

	char a[] = "Hello,World!";
	int b = 0, c = 0, d = 0, e = 0;
	i64 f = 0, g = 0, h = 0, i = 0;

	while (b < 1) {
		for (c = 0; c < 1; c++) {

			do {
				if (d < 12) {
					while (e == 0) {
						if (a[d] != '\0') {
							std::cout << a[d];
							e = 1;
						} else {
							e = 1;
						}
					}

					e = 0;
					d++;
				} else {
					break;
				}
			} while (d < 12);
		}

		for (f = 0; f < 5; f++) {

			if (f % 2 == 0) {
				g = f + 1;
			} else {
				g = f - 1;
			}

			while (h < g) {
				if (h == 2) {
					i = 1;
				} else {
					i = 0;
				}

				h++;
			}

			h = 0;
		}

		b++;
	}

	i64 j = 0;

	while (j < 10) {
		if (j > 5) {
			j += 2;
		} else {
			j++;
		}

		for (i64 k = 0; k < j; k++) {

			if (k == j / 2) {
				i64 l = k * 2;
			}
		}
	}

	i64 m = 5;

	do {
		if (m % 3 == 0) {
			m--;
		} else {
			m = m - 2;
		}
	} while (m > 0);


	return false;
}