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しばらく前に、最初のC ++プログラム（これ）で問題が発生していました。基本的に私は教授が構文を教えてくれなかったC++クラスのイントロの割り当てをしようとしています。これが今の私のコードです：

#include <cstdlib>
#include <ctime>
#include <iostream>
#include <string>


using namespace std;
class Race
{
  public:
     void main()
     {

        executeRace();

        int randomMove()
        {
                srand(time(NULL));
                int randomInt = rand() % 100 + 1;
                return randomInt;
        }

        void executeRace()
        {
                int rabbitPosition = 1;
                int turtlePosition = 1;

                cout << "BANG!!!" << endl << "AND THEY'RE OFF!!!";

                while (rabbitPosition <=70 && turtlePosition <=70)
                {
                        printPositions(rabbitPosition, turtlePosition);

                        turtlePosition = turtleMoveSquares(turtlePosition);
                        rabbitPosition = rabbitMoveSquares(rabbitPosition);
                }

                printWinner(rabbitPosition, turtlePosition);

                tie(rabbitPosition, turtlePosition);
        }

        int turtleMoveSquares(int tPosition)
        {

                int turtleMove = randomMove();

                if(turtleMove >=1 && turtleMove <= 40)
                        tPosition = tPosition + 4;

                if(turtleMove >= 41 && turtleMove <= 50 )
                        tPosition = tPosition - 2;

                if(turtleMove >=51 && turtleMove <=100)
                        tPosition = tPosition + 2;

                if(tPosition < 1)
                        tPosition = 1;

                return tPosition;
        }

        int rabbitMoveSquares(int rabbitPosition)
        {

                int rabbitMove = randomMove();

                if(rabbitMove >=1 && rabbitMove <= 25)
                        rabbitPosition = rabbitPosition;

                if(rabbitMove >=26 && rabbitMove <= 55)
                        rabbitPosition = rabbitPosition + 10;

                if(rabbitMove >=56 && rabbitMove <=60)
                        rabbitPosition = rabbitPosition - 15;

                if(rabbitMove >=61 && rabbitMove <= 90)
                        rabbitPosition = rabbitPosition + 5;

                if(rabbitMove >=90 && rabbitMove <=100)
                        rabbitPosition = rabbitPosition - 3;

                if(rabbitPosition < 1)
                        rabbitPosition = 1;

                return rabbitPosition;
        }

        void printPositions(int rabbitPositions, int turtlePositions)
        {
                int turtleCount;
                int rabbitCount;
                int endCount;

                if(rabbitPositions == turtlePositions && rabbitPositions != 1)
                {
                        turtleCount = 1;

                        while(turtleCount < turtlePositions)
                        {
                                cout << "-";
                                turtleCount = turtleCount+1;
                        }
                        cout << "OUCH!";
                }

                else
                {
                        turtleCount = 1;
                        rabbitCount = 1;
                        endCount=1;

                        if(turtlePositions < rabbitPositions)
                        {
                                while(turtleCount < turtlePositions)
                                {
                                        cout <<  "-";
                                                turtleCount = turtleCount+1;
                                }
                                cout << "T";

                                while(rabbitCount < (rabbitPositions - turtlePositions))
                                {
                                        cout <<  "-";
                                        rabbitCount = rabbitCount+1;
                                }
                                cout << "H";

                        }

                        if(rabbitPositions < turtlePositions)
                        {
                                while(rabbitCount < rabbitPositions)
                                {
                                        cout << "-";
                                                rabbitCount = rabbitCount+1;
                                }
                                cout << "H";

                                while(turtleCount < (turtlePositions - rabbitPositions))
                                {
                                        cout << "-";
                                        turtleCount = turtleCount+1;
                                }
                                cout << "T";

                                cout << "\n";
                        }
                }
        }

        void printWinner(int rabbitPosition, int turtlePosition)
        {
                if(turtlePosition >= 70 && rabbitPosition < 70)
                {
                        cout << "TORTOISE WINS!!! YAY!!!\n";
                }
                else if(rabbitPosition >=70 && turtlePosition < 70)
                {
                        cout << "Hare wins. Yuch.\n";
                }
                else if(rabbitPosition >=70 && turtlePosition >=70)
                {
                        cout << "It's a tie\n";
                }
        }

        void tie(int turtlePosition, int rabbitPosition)
        {
                if(rabbitPosition >=70 && turtlePosition >=70)
                        executeRace();
        }

    }
};



int main()
{
  Race race;
  race.main();
  return EXIT_SUCCESS;
}

コンパイル時のエラーは次のとおりです。

uxb3% g++ o- Race Race.cc
g++: o-: No such file or directory
g++: Race: No such file or directory
Race.cc: In member function 'void Race::main()':
Race.cc:14: error: 'executeRace' was not declared in this scope
Race.cc:17: error: a function-definition is not allowed here before '{' token
Race.cc:24: error: a function-definition is not allowed here before '{' token
Race.cc:44: error: a function-definition is not allowed here before '{' token
Race.cc:64: error: a function-definition is not allowed here before '{' token
Race.cc:90: error: a function-definition is not allowed here before '{' token
Race.cc:153: error: a function-definition is not allowed here before '{' token
Race.cc:169: error: a function-definition is not allowed here before '{' token

この任務について皆さんに迷惑をかけ続けて申し訳ありませんが、それは私の最初であり、私は非常に、非常にイライラしていて、現時点で取りつかれています。

4

4 に答える 4

8

関数内に関数を含めることはできません*。

あなたはおそらくこれが欲しいでしょう：

#include <cstdlib>
#include <ctime>
#include <iostream>
#include <string>


using namespace std;
class Race
{
  public:
    int randomMove()
    {
            srand(time(NULL));
            int randomInt = rand() % 100 + 1;
            return randomInt;
    }

    void executeRace()
    {
            int rabbitPosition = 1;
            int turtlePosition = 1;

            cout << "BANG!!!" << endl << "AND THEY'RE OFF!!!";

            while (rabbitPosition <=70 && turtlePosition <=70)
            {
                    printPositions(rabbitPosition, turtlePosition);

                    turtlePosition = turtleMoveSquares(turtlePosition);
                    rabbitPosition = rabbitMoveSquares(rabbitPosition);
            }

            printWinner(rabbitPosition, turtlePosition);

            tie(rabbitPosition, turtlePosition);
    }

    int turtleMoveSquares(int tPosition)
    {

            int turtleMove = randomMove();

            if(turtleMove >=1 && turtleMove <= 40)
                    tPosition = tPosition + 4;

            if(turtleMove >= 41 && turtleMove <= 50 )
                    tPosition = tPosition - 2;

            if(turtleMove >=51 && turtleMove <=100)
                    tPosition = tPosition + 2;

            if(tPosition < 1)
                    tPosition = 1;

            return tPosition;
    }

    int rabbitMoveSquares(int rabbitPosition)
    {

            int rabbitMove = randomMove();

            if(rabbitMove >=1 && rabbitMove <= 25)
                    rabbitPosition = rabbitPosition;

            if(rabbitMove >=26 && rabbitMove <= 55)
                    rabbitPosition = rabbitPosition + 10;

            if(rabbitMove >=56 && rabbitMove <=60)
                    rabbitPosition = rabbitPosition - 15;

            if(rabbitMove >=61 && rabbitMove <= 90)
                    rabbitPosition = rabbitPosition + 5;

            if(rabbitMove >=90 && rabbitMove <=100)
                    rabbitPosition = rabbitPosition - 3;

            if(rabbitPosition < 1)
                    rabbitPosition = 1;

            return rabbitPosition;
    }

    void printPositions(int rabbitPositions, int turtlePositions)
    {
            int turtleCount;
            int rabbitCount;
            int endCount;

            if(rabbitPositions == turtlePositions && rabbitPositions != 1)
            {
                    turtleCount = 1;

                    while(turtleCount < turtlePositions)
                    {
                            cout << "-";
                            turtleCount = turtleCount+1;
                    }
                    cout << "OUCH!";
            }

            else
            {
                    turtleCount = 1;
                    rabbitCount = 1;
                    endCount=1;

                    if(turtlePositions < rabbitPositions)
                    {
                            while(turtleCount < turtlePositions)
                            {
                                    cout <<  "-";
                                            turtleCount = turtleCount+1;
                            }
                            cout << "T";

                            while(rabbitCount < (rabbitPositions - turtlePositions))
                            {
                                    cout <<  "-";
                                    rabbitCount = rabbitCount+1;
                            }
                            cout << "H";

                    }

                    if(rabbitPositions < turtlePositions)
                    {
                            while(rabbitCount < rabbitPositions)
                            {
                                    cout << "-";
                                            rabbitCount = rabbitCount+1;
                            }
                            cout << "H";

                            while(turtleCount < (turtlePositions - rabbitPositions))
                            {
                                    cout << "-";
                                    turtleCount = turtleCount+1;
                            }
                            cout << "T";

                            cout << "\n";
                    }
            }
    }

    void printWinner(int rabbitPosition, int turtlePosition)
    {
            if(turtlePosition >= 70 && rabbitPosition < 70)
            {
                    cout << "TORTOISE WINS!!! YAY!!!\n";
            }
            else if(rabbitPosition >=70 && turtlePosition < 70)
            {
                    cout << "Hare wins. Yuch.\n";
            }
            else if(rabbitPosition >=70 && turtlePosition >=70)
            {
                    cout << "It's a tie\n";
            }
    }

    void tie(int turtlePosition, int rabbitPosition)
    {
            if(rabbitPosition >=70 && turtlePosition >=70)
                    executeRace();
    }
};

int main()
{
  Race race;
  race.executeRace();
  return EXIT_SUCCESS;
}

*もちろん、微積分などの高級言語を扱っている場合を除きます。

于 2009-02-09T01:00:57.573 に答える
3

コンパイラオプション：

g++ -o Race Race.cc

また、Race::main関数内で関数を宣言しています。

class Race
{
  public:
     void main()
     {

        executeRace();
     } // <----- add this
于 2009-02-09T01:01:54.933 に答える
2

gcc -o ...ではなく、を使用する必要があると思いますgcc o- ...。

そして、第二に、C++の関数で関数を定義することはできません。

他の関数定義をクラスの外に移動します。具体的には、最後から2番目のブレースをの直前void main()に移動する必要があります。int main()int randomMove()

于 2009-02-09T01:00:45.780 に答える
1

Raceで定義されているmain（）関数（中括弧内）に現在含まれているさまざまな関数を引き出したいと考えています。

それらを選択し、Ctrl-X（切り取り）、main（）宣言の上に移動し、Ctrl-V（貼り付け）します。再フォーマットします。再コンパイルします。

于 2009-02-09T01:02:09.783 に答える