Page 199 - ARM Based Microcontroller Projects Using MBED

8.17 PROJECT 14—SERIAL INTERRUPT 185
/**************************************************************************

HiLo Game
=========
This is the popular HiLo game. A random secret number is generated by the
computer between 1 and 100 and the user attempts to guess this number. If
the guess is higher than the secret number the message You are HIGH is
displayed. Similarly, if the guess is lower then the message You are LOW is
displayed. The message Success is displayed when the user finds the secret
number. Additionally, the number of attempts is also displayed when the
secret number is found.

Author: Dogan Ibrahim
Date : August 2018
File : HiLo
***************************************************************************/
#include "mbed.h"
Serial MyPC(USBTX, USBRX);
int main()
{
int Flag, SecretNumber, GuessedNumber, Attempts = 0;

while(1) // Do forever
{
Flag = 0;
MyPC.printf("\n\r"); // New line
MyPC.printf("\n\rStart of New Game"); // Display heading
MyPC.printf("\n\r===================");
SecretNumber = rand() % 100 + 1; // Between 1-100

while(Flag == 0) // While not found
{
MyPC.printf("\n\rEnter Your Guess (1 - 100): ");
MyPC.scanf("%d", &GuessedNumber);
Attempts++; // Increment attempts
if(GuessedNumber > SecretNumber) // If higher
MyPC.printf("\n\rYou are HIGH");
else if(GuessedNumber < SecretNumber) // If lower
MyPC.printf("\n\rYou are LOW");
else // Success
{
MyPC.printf("\n\rSuccess...");
MyPC.printf("Attempts = %d", Attempts); // Attempt count
Flag = 1; // Terminate loop
}
}
}
}
FIG. 8.47 Program listing.