Using C programming on Visual Studio Write a connect 4 progr

Solution

Answer:-

#include<iostream>
using namespace std;
void display();
bool check(int a, int b);
int drop(int b, char player);
char place[6][7];//available for whole program

int main(){
   for(int a =0;a <= 5; a++){       //fill place with whitespace
       for(int b = 0; b<=6; b++)   //
           place[a][b] = \' \';       //
   }                               //
   display();//Displays for first time so players can see the board
   int hold;//Will house user row choice
   int hold2 = 0;//will hold drop value
   int charsPlaced = 0;//Number of peices dropped so can end game if a draw
   bool gamewon = false;//Will be changed to true when game is won and will exit while loop
   char player = 15;//start as player 2 will change back 2 player 1
   while(!gamewon){//will stop when game is won, ! means NOT makes the oppisite be checked
       if(hold2 != -1){//check if there was a error in the last drop
           if(player == 15){//if player 2 lasted dropped a piece so its player 1s turn
               cout<<\"player 1 drop where?\";
               player = 254;//char of players piece
           }
           else{
               cout<<\"player 2 drop where?\";
               player = 15;//char of player piece
           }
       }
       while(true){//will run untill \'break;\'
           if(charsPlaced == 42) break;//if draw
           cin>>hold;//get user input
           hold--;//take off 1 to account for arrays starting at 0 not 1
           if(hold <=6 && hold>= 0) break;//if within valid range stop loop
           else cout<< \"\ please enter a value between 1 and 7 :\";//ask for input and loop again
           if (cin.fail())   //catch a non number
           {                       //
               cin.clear();       //Stops cin trying to put its value in to hold
               char c;           //Try entering a non number without this, 2 see what this does
               cin>>c;           //
           }                       //Catch a non number

       }
       if(charsPlaced == 42) break;//if draw
       hold2 = drop(hold,player);//drop the player store the row in hold2
       if(hold2 == -1)   cout<<\"Colom is full\ Please enter anothor number between 1 and 7:\";//if error -1 row is full
       else{
           gamewon = check(hold2,hold);//check if game is run
           charsPlaced ++;//another character has been succesfully placed
           system(\"cls\");//This clears the screen works with windows, not nesscery to run game
           display();//displayed updated board
       }
   }
   system(\"cls\");//this clears the screen
   if(charsPlaced == 42){//if draw
       cout<<\"No winner, Game was draw\ \";
       system(\"pause\");
       return 0;
   }
   if(player == 15)//if won by player 2
       cout<<\"gamewon by : player 2\ \";
   else cout<<\"gamewon by : player 1\ \";//Else won by player 1
   system(\"pause\");//pauses before exit so players can see who won, works with windows
   return 0;//Exit application
}
void display(){
   cout<<\" 1 2 3 4 5 6 7\ \";
   for(int a = 0; a<= 5; a++)
   {
       for(int b =0; b <= 6; b++) cout<<char(218)<<char(196)<<char(191)<<\" \";
       cout<<\'\ \';
       for(int b =0; b <= 6; b++) cout<<char(179)<<place[a][b]<<char(179)<<\" \";
       cout<<\'\ \';
       for(int b =0; b <= 6; b++) cout<<char(192)<<char(196)<<char(217)<<\" \";
       cout<<\'\ \';
   }
}
bool check(int a, int b){
   int vertical = 1;//(|)
   int horizontal = 1;//(-)
   int diagonal1 = 1;//(\\)
   int diagonal2 = 1;//(/)
   char player = place[a][b];
   int i;//vertical
   int ii;//horizontal
   //check for vertical(|)
   for(i = a +1;place[i][b] == player && i <= 5;i++,vertical++);//Check down
   for(i = a -1;place[i][b] == player && i >= 0;i--,vertical++);//Check up
   if(vertical >= 4)return true;
   //check for horizontal(-)
   for(ii = b -1;place[a][ii] == player && ii >= 0;ii--,horizontal++);//Check left
   for(ii = b +1;place[a][ii] == player && ii <= 6;ii++,horizontal++);//Check right
   if(horizontal >= 4) return true;
   //check for diagonal 1 (\\)
   for(i = a -1, ii= b -1;place[i][ii] == player && i>=0 && ii >=0; diagonal1 ++, i --, ii --);//up and left
   for(i = a +1, ii = b+1;place[i][ii] == player && i<=5 && ii <=6;diagonal1 ++, i ++, ii ++);//down and right
   if(diagonal1 >= 4) return true;
   //check for diagonal 2(/)
   for(i = a -1, ii= b +1;place[i][ii] == player && i>=0 && ii <= 6; diagonal2 ++, i --, ii ++);//up and right
   for(i = a +1, ii= b -1;place[i][ii] == player && i<=5 && ii >=0; diagonal2 ++, i ++, ii --);//up and left
   if(diagonal2 >= 4) return true;
   return false;
}
int drop(int b, char player){
   if(b >=0 && b<= 6)
   {
       if(place[0][b] == \' \'){
           int i;
           for(i = 0;place[i][b] == \' \';i++)
               if(i == 5){place[i][b] = player;
           return i;}
           i--;
           place[i][b] =player;
           return i;

       }
       else{
           return -1;
       }

   }
   else{
       return -1;
   }

}