Question

we saw a C program called GuessNumber.c that generates a random integer between 1 and 1000 and asks the user to guess that number. Modify the program so that at the end of each round, it also prints the number of guesses made by the user to reach the answer as well as the best score so far, i.e., the minimum number of guesses used in any round since the program was started. The source code of the original version of GuessNumber.c can be found in: https://github.com/pdeitel/CHowToProgram8e/archive/master.zip under examples/ch01/GuessNumber/GNU/randomized_version/

Answer 1

// Randomly generate numbers between 1 and 1000 for user to guess.
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

void guessGame(void); // function prototype
int isCorrect(int, int); // function prototype

int main(void)
{
srand(time(0)); // seed random number generator
guessGame();
} // end main

// guessGame generates numbers between 1 and 1000
// and checks user's guess
void guessGame(void)
{
int answer; // randomly generated number
int guess; // user's guess
int response; // 1 or 2 response to continue game
int min=100000;
int guesses=0;

// loop until user types 2 to quit game
do {
// generate random number between 1 and 1000
// 1 is shift, 1000 is scaling factor
guesses = 0;
answer = 1 + rand() % 1000;

// prompt for guess
puts("I have a number between 1 and 1000.\n"
"Can you guess my number?\n"
"Please type your first guess.");
printf("%s", "? ");
scanf("%d", &guess);

// loop until correct number
while (!isCorrect(guess, answer))
{
scanf("%d", &guess);
guesses++;
}

if( guesses < min )
min = guesses;

printf("\n The number of guesses taken by the user is %d", guesses);
printf("\n Best Score So far: %d", min);

// prompt for another game
puts("\nExcellent! You guessed the number!\n"
"Would you like to play again?");
printf("%s", "Please type ( 1=yes, 2=no )? ");
scanf("%d", &response);

puts("");
} while (response == 1);
} // end function guessGame

// isCorrect returns true if g equals a
// if g does not equal a, displays hint
int isCorrect(int g, int a)
{
// guess is correct
if (g == a)
return 1;

// guess is incorrect; display hint
if (g < a)
printf( "%s", "Too low. Try again.\n? " );
else
printf( "%s", "Too high. Try again.\n? " );

return 0;
} // end function isCorrect