Question

Program in C computer language

In this program you will be mimicking a game of Battleship. Your game board is a line of 10 slots. You have to implement 3 methods. The following methods must be implemented:

void setBoard(int *)

This method sets up the human’s game board. The method prompts the user for 2 slots to place the “ship”. The program should ensure that the slots are consecutive. In other words, your ship cannot be placed at slot 2 and at slot 6. Since the board has only 10 slots, valid slots are in the range of 0 to 9.

void setComputerBoard(int *)

Exactly the same as the setBoard method except that the position of the computer’s ship is set randomly. The computer’s ship must also be in consecutive slots.

intplayGame(int *, int *)

This method should do the following steps:

1. Have the computer pick at random a slot to “fire” at. If the slot the computer picked on the human’s board is a ship, a “HIT” message is displayed. If the slot on the human’s board is empty, a “MISS” message is displayed. Print out the computer’s board and the human’s board as described at the bottom of the page.

2. After the computer goes, have the human pick a slot to “fire” at. If the slot the human picked on the computer’s board is a ship, a “HIT” message is displayed. If the slot on the computer’s board is empty, a “MISS” message is displayed. Print out the computer’s board and the human’s board as described at the bottom of the page.

3. Repeat steps 1 and 2 until there is a winner. The computer wins if both of the human’s ship slots are hit. The human wins if both of the computer’s ship slots are hit.

The playGame method returns a 0 if the computer won. The playGame method returns a 1 if the human won.

The computer board is printed off with the following characters: (The human board is printed off similarly)

S – printed off in the slots where the computer’s ship is located.

M - printed off in the slots where the human guessed incorrectly.

H - printed off in the slots where the ship is located and where the human hit.

* - printed off in all other slots You can assume the input will always be a positive integer.

Important: You should use pointer notation when referencing values inside an array as opposed to array notation. For example, use *ptrToArray instead of array[0] and *(ptrToArray+1) instead of array[1], etc. You will lose 10 points for not following this notation.

This homework can be solved using char pointers as well. I would accept that as a valid solution too. It is your choice whether you want to use int pointers or char pointers.

You can also modify the parameters mentioned for the methods. As long as you have the methods performing the tasks stated in the problem, I will give credit.

A sample run of the code is below –

Enter 1st position: 4

Enter 2nd position: 5

Computer guesses 9

MISS!

Human Board:

0 1 2 3 4 5 6 7 8 9

* * * * S S * * * M

Computer Board:

0 1 2 3 4 5 6 7 8 9

* * S S * * * * * *

Enter guess: 4

You guessed 4

MISS!

Human Board: 0 1 2 3 4 5 6 7 8 9

* * * * S S * * * M

Computer Board:

0 1 2 3 4 5 6 7 8 9

* * S S M * * * * *

Computer guesses 4

HIT!

Human Board:

0 1 2 3 4 5 6 7 8 9

* * * * H S * * * M

Computer Board:

0 1 2 3 4 5 6 7 8 9

* * S S M * * * * *

Enter guess: 3

You guessed 3

HIT!

Human Board:

0 1 2 3 4 5 6 7 8 9

* * * * H S * * * M

Computer Board:

0 1 2 3 4 5 6 7 8 9

* * S H M * * * * *

Computer guesses 7

MISS!

Human Board:

0 1 2 3 4 5 6 7 8 9

* * * * H S * M * M

Computer Board:

0 1 2 3 4 5 6 7 8 9

* * S H M * * * * *

Enter guess: 9

You guessed 9

MISS!

Human Board:

0 1 2 3 4 5 6 7 8 9

* * * * H S * M * M

Computer Board:

0 1 2 3 4 5 6 7 8 9

* * S H M * * * * M

Computer guesses 3

MISS!

Human Board:

0 1 2 3 4 5 6 7 8 9

* * * M H S * M * M

Computer Board:

0 1 2 3 4 5 6 7 8 9

* * S H M * * * * M

Enter guess: 5

You guessed 5

MISS!

Human Board:

0 1 2 3 4 5 6 7 8 9

* * * M H S * M * M

Computer Board:

0 1 2 3 4 5 6 7 8 9

* * S H M M * * * M

Computer guesses 0

MISS!

Human Board:

0 1 2 3 4 5 6 7 8 9

M * * M H S * M * M

Computer Board:

0 1 2 3 4 5 6 7 8 9

* * S H M M * * * M

Enter guess: 2

You guessed 2

HIT!

Human Board:

0 1 2 3 4 5 6 7 8 9

M * * M H S * M * M

Computer Board:

0 1 2 3 4 5 6 7 8 9

* * H H M M * * * M

Human wins!

Answer 1

Code

#include<stdio.h>
#include <stdlib.h>
#include <time.h>
void setComputerBoard(char *);
int intplayGame(char *, char *);
void setBoard(char *);
void printBorad(char *);
int getRandomNumber();
int main()
{
   char humnaBoard[10];
   char computerBoard[10];
   int wins;
   srand(time(0));
   setBoard(humnaBoard);
   setComputerBoard(computerBoard);
   wins=intplayGame(humnaBoard, computerBoard);
   if(wins==1)
       printf("\nHuman Wins\n");
   else
       printf("\nComputer Wins\n");
   return 1;
}
void setBoard(char *board)
{
   char *p;
   int i=0,first_pos,second_pos;
   p=board;
   for (i = 0; i<10; i++)
   {
       *(p+i)='*';
   }
   printf("Enter 1st position: ");
   scanf("%d",&first_pos);
   printf("Enter 2nd position: ");
   scanf("%d",&second_pos);
   *(p+first_pos)='S';
   *(p+second_pos)='S';
}
void setComputerBoard(char *board)
{
   char *p;
   int i=0,first_pos,second_pos;
   p=board;
   for (i = 0; i<10; i++)
   {
       *(p+i)='*';
   }
   first_pos = (rand() % (8 - 0 + 1)) + 0;
   second_pos=first_pos+1;
   *(p+first_pos)='S';
   *(p+second_pos)='S';
}
int intplayGame(char *hBoard, char * cBoard)
{
   int computer_hit=0,human_hit=0;
   int computer_guess,human_guess;
   int i,j;
   do
   {
       computer_guess=getRandomNumber();
       printf("\nComputer guesses %d",computer_guess);
       if(*(hBoard+computer_guess)=='S')
       {
           printf("\nHIT!");
           *(hBoard+computer_guess)='H';
           computer_hit++;
       }
       else
       {
           printf("\nMISS!");
           *(hBoard+computer_guess)='M';
       }
       printf("\nHuman Board:");
       printBorad(hBoard);
       printf("Computer Board:");
       printBorad(cBoard);
       fflush(stdin);
       printf("\nEnter guess: ");
       scanf("%d",&human_guess);
       if(*(cBoard+human_guess)=='S')
       {
           printf("\nHIT!");
           *(cBoard+human_guess)='H';
           human_hit++;
       }
       else
       {
           printf("\nMISS!");
           *(cBoard+human_guess)='M';
       }
       printf("\nHuman Board:");
       printBorad(hBoard);
       printf("Computer Board:");
       printBorad(cBoard);
   }while(computer_hit!=2 && human_hit!=2);
   if(human_hit==2)
       return 1;
   else
       return 0;
}
void printBorad(char *board)
{
   int i=0;
   printf("\n");
   for (i = 0; i<10; i++)
   {
       printf("%d ",i);
   }  
   printf("\n");
   for (i = 0; i<10; i++)
   {
       printf("%c ",*(board+i));
   }
   printf("\n");
}
int getRandomNumber()
{
   return ((rand() % (9 - 0 + 1)) + 0);
}

output

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