《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)