循环控制结构

很喜欢C Primer Plus的一句话：用好循环与指针相当于拥有了C语言中的倚天剑与屠龙刀。
因此，学好循环很重要。

第六章：循环控制结构

6.1 循环控制结构与控制语句

6.2 计数控制的循环

6.3 嵌套循环

6.4 条件控制的循环

以下是猜数（终极版）游戏的代码

（编译器为vs2022）

#define _CRT_SECURE_NO_WARNINGS 1
#include 
#include
#include 
int main(void)
{
	int magic, guess, ret;
	int counter = 0;
	char reply;
	srand(time(NULL));
	do {
		magic = rand() % 100 + 1;
		counter = 0;
		do {
			printf("Please guess a magic number: ");
			ret = scanf("%d", &guess);
			while (ret != 1)
			{
				while (getchar() != '\n');
				printf("Please guess a magic number:");
				ret = scanf("%d", &guess);
			}
			counter++;
			if (guess > magic)
			{
				printf("Wrong! Too big!\n");
			}
			else if (guess < magic)
			{
				printf("Wrong!Too small\n!");
			}
			else
				printf("答对了，我的老baby\n");
		} while (guess != magic && counter < 10);
		printf("counter = %d\n", counter);
		printf("Do you want guess again?(Y/N or y/n)?");
		scanf(" %c", &reply);
	} while (reply == 'Y' || reply == 'y');
	return 0;
}

6.5 流程的转移控制

6.5.1 goto语句

6.5.2 break语句

6.5.3 continue语句