上机实验(4)

#include

#include

main() { int magic; /*计算机\想\的数*/ int guess; /*人猜的数*/ int counter; /*记录人猜的次数*/ srand(time(NULL)); magic = rand() % 100 + 1; counter = 0; do { printf(\ scanf(\ counter ++; if (guess > magic) { printf(\ } else if (guess < magic) { printf(\ } }while (guess != magic); /*直到人猜对为止*/ printf(\ printf(\}

程序运行结果如下：

Please guess a magic number:50↙ Wrong!Too low!

Please guess a magic number:90↙ Wrong!Too high!

Please guess a magic number:70↙ Wrong!Too high!

Please guess a magic number:60↙ Wrong!Too high!

Please guess a magic number:55↙ Wrong!Too high!

Please guess a magic number:52↙ Right! counter = 6

程序3参考答案：

#include #include #include main() { int magic; /*计算机\想\的数*/ int guess; /*人猜的数*/ int counter; /*记录人猜的次数*/ srand(time(NULL)); magic = rand() % 100 + 1; counter = 0;

do { printf(\ scanf(\ counter ++; if (guess > magic) { printf(\ } else if (guess < magic) { printf(\ } else { printf(\ } }while ((guess!=magic) && (counter<10));/*猜不对且未超过10次时继续猜*/ printf(\}

程序两次测试的运行结果分别如下：

①Please guess a magic number:50↙ Wrong!Too low!

Please guess a magic number:80↙ Wrong!Too high!

Please guess a magic number:60↙ Wrong!Too high!

Please guess a magic number:55↙ Right! counter = 4

②Please guess a magic number:40↙ Wrong!Too low!

Please guess a magic number:90↙ Wrong!Too high!

Please guess a magic number:80↙ Wrong!Too high!

Please guess a magic number:70↙ Wrong!Too high!

Please guess a magic number:60↙ Wrong!Too high!

Please guess a magic number:55↙ Wrong!Too high!

Please guess a magic number:50↙ Wrong!Too high!

Please guess a magic number:45↙ Wrong!Too high!

Please guess a magic number:44↙ Wrong!Too high!

Please guess a magic number:43↙ Wrong!Too high!

counter = 10

程序4参考答案：

#include #include #include main() { int magic; /*计算机\想\的数*/ int guess; /*人猜的数*/ int counter; /*记录人猜的次数*/ char reply; /*用户键入的回答*/ srand(time(NULL)); do { magic = rand() % 100 + 1; counter = 0; do { printf(\ scanf(\ counter ++; if (guess > magic) { printf(\ } else if (guess < magic) { printf(\ } else { printf(\ } }while ((guess!=magic) && (counter<10));/*猜不对且未超过10次时继续猜*/ printf(\ printf(\ scanf(\ }while ((reply == 'Y') || (reply == 'y')); printf(\ }

程序运行结果如下：

Please guess a magic number:50↙ Wrong!Too low!

Please guess a magic number:80↙ Wrong!Too low!

Please guess a magic number:90↙ Wrong!Too high!

Please guess a magic number:85↙ Wrong!Too high!

Please guess a magic number:83↙ Right! counter = 5

Do you want to continue(Y/N or y/n)?y↙ Please guess a magic number:50↙ Wrong!Too low!

Please guess a magic number:80↙ Wrong!Too low!

Please guess a magic number:90↙ Wrong!Too low!

Please guess a magic number:95↙ Wrong!Too low!

Please guess a magic number:99↙ Right! counter = 5

Do you want to continue(Y/N or y/n)?n↙ The game is over!

实验四 函数编程练习

程序1参考答案：

#include

/* 函数功能： 计算两整型数之和，如果与用户输入的答案相同，则返回1，否则返回0 函数参数： 整型变量a和b，分别代表被加数和加数

函数返回值：当a加b的结果与用户输入的答案相同时，返回1，否则返回0 */

int Add(int a, int b) { int answer; printf(\ scanf(\ if (a+b == answer) return 1; else return 0; }

/* 函数功能： 打印结果正确与否的信息。

函数参数： 整型变量flag，标志结果正确与否 函数返回值：无 */

void Print(int flag) { if (flag) printf(\ else printf(\}

main() /*主函数*/ { int a, b, answer; printf(\ scanf(\ answer = Add(a, b); Print(answer); }

程序两次测试的运行结果分别如下：

①Input a,b:1,2↙

1+2=3↙

Right!

②Input a,b:1,2↙

1+2=4↙

Not correct!

程序2参考答案：

#include

/* 函数功能： 计算两整型数之和，如果与用户输入的答案相同，则返回1，否则返回0 函数参数： 整型变量a和b，分别代表被加数和加数

函数返回值：当a加b的结果与用户输入的答案相同时，返回1，否则返回0 */

int Add(int a, int b) { int answer; printf(\ scanf(\ if (a+b == answer) return 1; else return 0; }

/* 函数功能： 打印结果正确与否的信息。

函数参数： 整型变量flag，标志结果正确与否 函数返回值：无 */

void Print(int flag) { if (flag) printf(\ else printf(\}

main() /*主函数*/ { int a, b, answer; printf(\ scanf(\ do { answer = Add(a, b); Print(answer); }while (answer == 0); }

程序运行结果如下：

Input a,b:1,2↙ 1+2=4↙

Not correct. Try again! 1+2=5↙

Not correct. Try again! 1+2=3↙ Rright!

程序3参考答案：

#include

/* 函数功能： 计算两整型数之和，如果与用户输入的答案相同，则返回1，否则返回0 函数参数： 整型变量a和b，分别代表被加数和加数

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