Part 3 For part 3, you will write a function called fire (), which gives the res

Question

Part 3 For part 3, you will write a function called fire (), which gives the result of a player firing at a particular coordinate. The function header should look like this: x and y are the coordinates of the shots target space. You'll note that the functions returns a string. The function should return a different message depending on the result of the shot. . Return Out of bounds! if the target space is not on the grid ? Return HIT! if the target space contains a ship (i.e any character other than a ?, ?) . Return ?CLOSE!? if the target space does NOT contain a ship but there is a ship in any one of the 8 adjacent squares (so diagonals count!!) to the target space . Hint: Be careful about checking adjacent spaces when the target space is on the edge of the grid! ? Return -MISS!' in all other cases

Explanation / Answer

#include <iostream>

using namespace std;

void printMap(char map[10][10]){
   for(int i = 0; i < 10; ++i){
       for(int j = 0; j < 10; ++j){
           cout << map[i][j];
       }
       cout << endl;
   }
   cout << endl;
}

void placeShip(char map[10][10], int x1, int y1, int x2, int y2, char ship){
   if((x1 > 9 || x1 < 0) || (x2 > 9 || x2 < 0) || (y1 > 9 || y1 < 0) || (y2 > 9 || y2 < 0)){
       cout << "Out of bounds" << endl;
       return;
   }
   for(int i = 0; i < 10; ++i){
       for(int j = 0; j < 10; ++j){
           if(map[i][j] == ship){
               cout << "Ship already exists" << endl;
               return;
           }
       }
   }
   if(!(x1 != x2 || y1 != y2)){
       cout << "Neither horizontal nor vertical" << endl;
       return;
   }
   if(x1 == x2){
       int y11 = y1 > y2 ? y2 : y1;
       int y22 = y1 > y2 ? y1 : y2;
       for(int i = y11; i <= y22; ++i){
           if(map[x1][i] != '.'){
               cout << "another ship exists in those coordinates" << endl;
               return;
           }
       }
       for(int i = y11; i <= y22; ++i){
           map[x1][i] = ship;
       }
   }
   else{
       int x11 = x1 > x2 ? x2 : x1;
       int x22 = x1 > x2 ? x1 : x2;
       for(int i = x11; i <= x22; ++i){
           if(map[i][y1] != '.'){
               cout << "another ship exists in those coordinates" << endl;
               return;
           }
       }
       for(int i = x11; i <= x22; ++i){
           map[i][y1] = ship;
       }
   }
}

string fire(char map[10][10], int x, int y){
   if((x > 9 || x < 0) || (y > 9 || y < 0)){
       return "Out of bounds!";
   }
   if(map[x][y] != '.'){
       return "HIT!";
   }
   for(int i = -1; i <= 1; ++i){
       for(int j = -1; j <= 1; ++j){
           if((x + i >= 0 && x + i <= 9) && (y + j >= 0 && y + j <= 9) && map[x + i][y + j] != '.'){
               return "CLOSE!";
           }
       }
   }
   return "MISS!";
}

int main(){
   char map[10][10];
   for(int i = 0; i < 10; ++i){
       for(int j = 0; j < 10; ++j){
           map[i][j] = '.';
       }
   }
   printMap(map);
   placeShip(map, 1, 1, 1, 3, 'b');
   printMap(map);
   cout << fire(map, 1, 0) << endl;
   return 0;
}

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