Programming abstractions in C 阅读笔记: p114-p117

#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;}