C language guessing game and trickery game

Guess the number game to achieve // Let the computer generate a random number （1~100）

#include <time.h>
#include <stdlib.h>
void menu()
{
    
	printf("******************************\n");
	printf("********** 1.play **********\n");
	printf("********** 2.exit **********\n");
	printf("******************************\n");

}
void game()
{
    
	//1、 Generate random number 
	int ret = rand()%100;// Functions that generate random numbers   This function generates 0~RAND_MAX(32767) Number between , model 100 It will only be generated in the future 0~99  Again +1 Namely 1~100
	printf("%d\n", ret); 
	//2、 Guess the number 
	int guess = 0;
	printf(" Please guess the number ：>");
	scanf("%d", &guess);
	while (1)
	{
    
		if (guess < ret)
		{
    
			printf(" Guess a little \n");
		}
		else if (guess > ret)
		{
    
			printf(" Guess the \n");
		}
		else
		{
    
			printf(" congratulations ！ That's right ！\n");
			break;
		}
	}
 }
int main()
{
    
	srand((unsigned int)time(NULL));
	// without srand This function   Each time the same set of random numbers is generated 
	//srand Corresponding <stdlib.h> time Corresponding <time.h>
	// If you use a constant in parentheses   Then the same set of numbers will always be generated   So you need a random number to start 
	// Time is the best random number —> Time stamp ： Each time can correspond to a timestamp , It's a difference from the start time of the computer , The unit is in seconds 
	// As long as time is changing , The timestamp is changing   Use time Function to generate timestamp 
	// time The function requires that the parameter we pass in is a pointer , If we don't want to use parameters   We can use a null pointer NULL
	//time The function returns an integer , typedef long long _64time_t
	//srand What needs to be passed in is a unsigned int The type of   What we need to do at this time is to cast 
	int input = 0;
	do
	{
    
		menu();
		printf(" Please select :>");
		scanf("%d", &input);
		switch (input)
		{
    
		case 1:
			// Encapsulate the game here 
			game();
			break;
		case 0:
			printf(" Quit the game \n");
			break;
		default:
			printf(" Wrong choice , To choose ！\n");
			break;
		}
	} while (input);
	return 0;
}

Let a friend's computer execute the shutdown program

// Shutdown Sequence 
//1、 When the computer runs  1 Shut down in minutes 
//2、 If input ： I am a pig , Just cancel the shutdown 
#include <string.h>
int main()
{
    
	// stay Windows Of cmd Inside   Input shutdown -s -t 60 （-s To shut down -s Shut down for a set time 60 by 60 Shut down in seconds ） Input shutdown -a You can cancel the shutdown 
	//  How to execute system commands ？ Use system function 
	char input[20] = {
     0 };
	system("shutdown -s -t 60");
again:
	printf(" Please note that , Your computer is 60 Power off in seconds , If input ： I am a pig , Just cancel the shutdown \n");
	scanf("%s", input);
	if (strcmp(input, " I am a pig ") == 0)
	{
    
		system("shutdown -a");
	}
	else
	{
    
		goto again;
	}

	return 0;
}

How to realize... Through files ？

After running the program again , There will be... Next to the folder where the project is stored release Folder , The inside exe Extract the execution file and send it to your friends