C 语言打印前 10 个偶数自然数的程序

编写一个 C 程序，使用 for 循环打印前 10 个偶数自然数。

#include <stdio.h>

int main()
{
	printf("The First 10 Even Natural Numbers are\n");
	for (int i = 1; i <= 10; i++)
	{
		printf("%d\n", 2 * i);
	}
}

本C 程序使用 while 循环显示前 10 个偶数自然数。

#include <stdio.h>

int main()
{
	printf("The First 10 Even Natural Numbers are\n");

	int i = 1;

	while (i <= 10)
	{
		printf("%d\n", 2 * i);
		i++;
	}
}

The First 10 Even Natural Numbers are
2
4
6
8
10
12
14
16
18
20

此 C 程序使用 do while 循环打印前 10 个偶数自然数。

#include <stdio.h>

int main()
{

	printf("The First 10 Even Natural Numbers are\n");

	int i = 1;

	do
	{
		printf("%d\n", 2 * i);

	} while (++i <= 10);
}

The First 10 Even Natural Numbers are
2
4
6
8
10
12
14
16
18
20