Thread: Programming Help

1) do/while looks like this:

Code:

do {
  /* Body */
} while ( condition );

No loop controls come after the while like in a normal while loop.

2) Each time you call getchar, you actually request input. Since you want a single character to test, only call getchar once.

3) Scanf will cause you problems when you mix it with getchar.

Here is something workable:

Code:

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main(void)
{ //begin of function main

  int num; //number generated
  int guess = 0;
  int game = 0;
  int counter = 0;	

  srand(time(NULL)); //generate the random seed generator
  num =  rand() % 100 +1 ;  //pick a number from 1 to 100

  printf("I will generate a random number between 1 and 100\n");
  printf("Can you guess the number?\n");
  printf("Please enter your first guess.\n");

  do
  {
    while (num != guess)
    {
      scanf("%d", &guess);
      ++counter;

      if (guess > 100 || guess <= 0)
      {
        printf("Number out of range\n");
        printf("Try again\n");
      }
      else if (guess > num)
      {
        printf("Too High! try again!\n");
      }
      else if (guess < num)
      {
        printf("Too Low! try again!\n");
      }
    }  //end while

    printf("You guessed the number in %d tries!\n",counter);
    //i = counter/ guess;

    if(counter >= 16)
    {
      printf("You need more practice \n");
    }
    else if (counter >= 11 && counter <= 15)
    {
      printf("Your getting better \n");
    }
    else if (counter >= 6 && counter <= 10)
    {
      printf("Practice Pays off\n");
    }
    else if (counter >= 2 && counter <= 5)
    {
      printf("Nice job \n");
    } 
    else if (counter == 1)
    {
      printf("You got lucky !!\n");
    }

    printf("Would you like to play again?\n");
    printf("Enter  n or N to quit\n");
    while ( getchar() != '\n' )
      ;
    game = getchar();
    getchar();
  } //end of do while
  while (game != 'n' && game != 'N'); 

  return 0;

}// end of main

The syntax for a do/while is just:

Code:

do {

}while(/*condition*/);

>> while (getchar() != 'n'|| getchar() != 'N');

getchar() takes input from the user *each and every* time it is called. Since you really only want it called once per go round, you'll need to store it's result in a variable and use that for comparison, ie:

Code:

char input = 0;
do{
 input = getchar();
}while(input != 'n' && input != 'N');

By the time the user breaks out of the loop, there's no need to check it again - you know the input was either 'n' or 'N'.

>> if(getchar() == 'n'|| getchar() == 'N');

The semicolen at the end of that if statement of course expands out to:

if(getchar() == 'n'|| getchar() == 'N'){ /* do nothing */ }

You probably didn't mean to type that, just be mindful of your semicolens.



[edit]
I'm too slow.
[/edit]

>I am still confused about how to continue the session until the key word is entered 'n' or 'N' .
A good idea would be to wrap the game itself in a function, then use a controlling loop in main to call that function as long as the user keeps entering something other than n or N.