这里提供一个 记忆游戏 类似于记单词
#include <stdio.h> /* For input and output */
#include <ctype.h> /* For toupper（） function */
//#include <stdbool.h> /* For bool, true, false */
#include <stdlib.h> /* For rand（） and srand（） */
#include <time.h> /* For time（） and clock（） */
int main（void）
{
/* Records if another game is to be played */
char another_game = 'Y';
/* true if correct sequence entered, false otherwise */
int correct = false;
/* Number of sequences entered successfully */
int counter = 0;
int sequence_length = 0; /* Number of digits in a sequence */
time_t seed = 0; /* Seed value for random number sequence */
int number = 0; /* Stores an input digit */
time_t now = 0; /* Stores current time - seed for random values */
int time_taken = 0; /* Time taken for game in seconds */
/* Describe how the game is played */
printf（"\nTo play Simple Simon, "）；
printf（"watch the screen for a sequence of digits."）；
printf（"\nWatch carefully, as the digits are only displayed"
" for a second! "）；
printf（"\nThe computer will remove them, and then prompt you "）；
printf（"to enter the same sequence."）；
printf（"\nWhen you do, you must put spaces between the digits. \n"）；
printf（"\nGood Luck!\nPress Enter to play\n"）；
scanf（"%c", &another_game）；
/* One outer loop iteration is one game */