笔记

1.C++笔记

int main(){
	int year;
	printf("请输入一个年份：");
	scanf("%d, &year");
	// 判断闰年的条件
	// 条件1 ： 能被4整除且不能被100整除
	// 条件2 ：能被 400 整除
	// 两个条件满足其一就是闰年 
	
	(year % 4 == 0 && year % 100 != 0) || (year % 400 ==0)?
	printf("%d 年是闰年 \n",year) : printf("%d 年不是闰年 \n", year);
	return 0;

}

2.Python笔记

 # while 循环基础
count = 1 # 初始值
while count <= 5:
    print("我在学习while循环")
    count += 1 # count = count + 1

 # 累加计算
    count = 1  # 初始值
    total = 0  # 总和的初始值
    while count <= 5:
        print(count)
        total += count  # total = total +


        count += 1  # count = count + 1
        print("总和为：",total)

        #喝水
        cup = 1 #初始值
        target = 8
        while cup < target:
            a = input()
            print(f"喝了第{cup}杯水")
            cup += 1
        printf("喝水任务完成")

        #计算1-100的偶数
        count = 2 #初始值
        total = 0 #总和的初始值
        while count <= 100:
            total += count #total = total + count
            print(count)
            count += 2 #count = count + 2
        print("总和为：" , total)


    # 计算50以内所有能被7整除的数的和
        count = 7  # 初始值
        total = 0  # 总和的初始值
        while count <= 50:
            total += count  # total = total + count
            print(count)
            count += 7  # count = count + 2
        print("总和为：", total)

    # 计算100以内所有能被3和5整除的数的和
        count = 7  # 初始值
        total = 0  # 总和的初始值
        while count <= 50:
            total += count  # total = total + count
            print(count)
            count += 7  # count = count + 2
        print("总和为：", total)

逻辑运算符

x = 0 y = 1 a = 0 b = 2

and

c =x and y c =y and x c =x and a c =y and b print(c) #or c = x or y c = y or x c = x or a c = y or b print(c) #not c = not a c = not b print(c)