关于c:Programming-abstractions-in-C阅读笔记-p114p117

37次阅读

共计 1646 个字符,预计需要花费 5 分钟才能阅读完成。

《Programming Abstractions in C》学习第 48 天,p114-p117,​总结如下:

一、技术总结
次要通过 random number 介绍了随机数的相干用法,interface​示例(random.h)​,client program 示例(craps.c)。

#include <stdio.h>
#include "genlib.h"
#include "random.h"

static bool TryToMakePoint(int point);
static int RollTwoDice(void);

void main() {
    int point;

    Randomize();  // 定义在自定义的 random.h 文件中
    printf("This program plays a game of craps.\n");
    point = RollTwoDice();
    switch (point) {
    case 7: case 11:
        printf("That's a natural. You win.\n");
        break;
    case 2: case 3: case 12:
        printf("That's craps. You lose.\n");
        break;
    default:
        printf("Your point is %d.\n", point);
        if (TryToMakePoint(point)) {printf("You made your point. You win.\n");
        } else {printf("You rolled a seven. You lose.\n");
        }


    }
}

static bool TryToMakePoint(int point) {
    int total;

    while (TRUE) {total = RollTwoDice();
        if (total == point) return TRUE;
        if (total == 7) return FALSE;
    }
}

static int RollTwoDice(void) {
    int d1, d2, total;

    printf("Rolling the dice ...\n");
    d1 = RandomInteger(1, 6);  // 定义在自定义的 random.h 文件中
    d2 = RandomInteger(1, 6);
    total = d1 + d2;
    printf("You rolled %d and %d -- that's %d.\n", d1, d2, total);
    return total;
}

二、英语总结
1.inclusive 什么意思?
答:adj. including a particular thing。当探讨波及到范畴时,咱们常常会说在某两个数之间,如果蕴含这两个数,那么就用 inclusive 这个词来形容这两个数。示例:p114,The first prototype is for the function RandomInteger(low, high), which return a randomly chosen integer in the range between low and high, inclusive。

2.subject to sth 语法
答:subject 用法最常见的是用作 noun,不过 subject 也能够用作 adjective。subject to sth:only able to happen if sth else happen。

三、数学总结
1. 区间相干概念
(1) 半开区间: half-open internal
(2) open circle:open circle
(3) 方括号:square bracket

三、参考资料
1. 编程
(1)Eric S.Roberts,《Programming Abstractions in C》​:https://book.douban.com/subject/2003414
2. 英语
(1)Etymology Dictionary:https://www.etymonline.com
(2)Cambridage Dictionary:https://dictionary.cambridge.org

欢送搜寻及关注:编程人(a_codists)

正文完
 0