// Boma Braide
// December 12, 2018
// Game of NIM
#include <iostream>
#include <ctime>
#include <cmath>
usingnamespace std;
int main(){
bool winner = false;
int num, sticks = 22, comp_choice;
char whoseTurn, yourTurn = 'Y', compTurn = 'N';
srand(time(NULL));
cout << "welcome to the game of N I M. would you like to go first? Y/N" << endl;
cin >> whoseTurn;
if (whoseTurn == yourTurn){
cout << "you go first!" << endl;
}
elseif (whoseTurn == compTurn){
cout << "the computer goes first!" << endl;
}
cout << endl;
while (sticks >= 0){
// if the player chooses to go first...
if (whoseTurn == yourTurn){
cout << "there are " << sticks << " sticks in the pile.\n"
<< "\n enter the amount (between 1 and 4) of sticks that you will remove from this pile." << endl;
cin >> num;
// if number is 1-4, amount of sticks taken/left will be displayed
if ((num >= 1) && (num <= 4)){
cout << "you have removed " << num << " sticks from the pile." << endl;
sticks -= num;
cout << "there are now " << sticks << " sticks left in the pile." << endl;
}
// if number is less than 1 or greater than 4, user will be repeatedly prompted until done so
if ((num < 1) || (num > 4)){
cout << "unacceptable answer >:( enter an amount between *1* and *4*" << endl;
// cin >> num;
}
// computer enters value
else {
comp_choice = 1 + rand() % (4 - 1) + 1;
sticks -= comp_choice;
cout << "\n the computer has taken away " << comp_choice << " sticks from the pile.\n"
<< "there are now " << sticks << " sticks left in the pile.\n";
}
}
// ----------------------------------------------------------------------------------------------------------- //
// if COMPUTER goes first
elseif (whoseTurn == compTurn){
comp_choice = 1 + rand() % (4 - 1) + 1;
sticks -= comp_choice;
cout << "\n the computer has taken away " << comp_choice << " sticks from the pile.\n"
<< "there are now " << sticks << " sticks left in the pile.\n";
}
else {
do {
cout << "there are " << sticks << " sticks in the pile.\n"
<< "\n enter the amount (between 1 and 4) of sticks that you will remove from this pile." << endl;
cin >> num;
} while ((num >= 1) && (num <= 4));
cout << "you have removed " << num << " sticks from the pile." << endl;
sticks -= num;
cout << "there are now " << sticks << " sticks left in the pile." << endl;
if ((num < 1) || (num > 4)){
cout << "unacceptable answer >:( enter an amount between *1* and *4*" << endl;
}
whoseTurn = whoseTurn == compTurn ? yourTurn : compTurn;
}
}
system("pause");
return 0;
}
(i haven't yet figured where/how I'll declare the winner once the user or computer reaches 0 so that's a problem too. Your help is much appreciated!)
There were several small errors in your code, especially at the range of your random numbers and how you detect if the poile get empty. Here the fixed code. I have used the random facilities introduced at c++11.
#include <iostream>
#include <random>
usingnamespace std;
int main(){
bool playerWon;
int num, sticks = 22;
char whoseTurn;
constchar yourTurn = 'Y', compTurn = 'N';
default_random_engine r( random_device{}());
uniform_int_distribution<> d(1,4);
cout << "welcome to the game of N I M. would you like to go first? Y/N" << endl;
cin >> whoseTurn;
if (whoseTurn == yourTurn) cout << "you go first!" << endl;
elseif (whoseTurn == compTurn) cout << "the computer goes first!" << endl;
cout << endl;
while (sticks > 0){
// if the player chooses to go first...
if (whoseTurn == yourTurn){
cout << "There are " << sticks << " sticks in the pile.\n"
<< "\n enter the amount (between 1 and 4) of sticks that you will remove from this pile." << endl;
cin >> num;
// if number is 1-4, amount of sticks taken/left will be displayed
if ((num >= 1) && (num <= 4)){
if (num >= sticks) {
cout << "You have won!\n";
playerWon = true;
break;
}
cout << "you have removed " << num << " sticks from the pile." << endl;
sticks -= num;
cout << "there are now " << sticks << " sticks left in the pile." << endl;
whoseTurn = compTurn;
continue;
}
// if number is less than 1 or greater than 4, user will be repeatedly prompted until done so
if ((num < 1) || (num > 4)){
cout << "unacceptable answer >:( enter an amount between *1* and *4*" << endl;
// cin >> num;
continue;
}
}
// computer enters value
else {
if ( sticks <= 4){
cout << "\nThe computer took " << sticks << " sticks, it won\n";
playerWon = false;
break;
}
int comp_choice = d(r); // gtting a random number
sticks -= comp_choice;
cout << "\n the computer has taken away " << comp_choice << " sticks from the pile.\n";
whoseTurn = yourTurn;
}
}
cout << (playerWon ? "Congratulations, you won the game." : "Sorry, you lost.") << '\n';
}
