C++ Cout & Cin & System “暧昧”

C++ Cout & Cin & System "Ambiguous"

提问by Colby Ryan Freeman

I was just programming in c++, when all of a sudden all the "cout"s and "cin"s were errors and "Ambiguous". Including System.

我只是用 C++ 编程，突然间所有的“cout”和“cin”都是错误和“模棱两可”。包括系统。

I don't know why this happened. Everything was fine, I was coding the same program for about 2 hours, when it just... happened.

我不知道为什么会这样。一切都很好，我编写了大约 2 个小时的同一个程序，然后它就……发生了。

EDIT

编辑

I can still run the program without errors, but they show as errors on the text, the red scribbly line. What happened?

我仍然可以毫无错误地运行该程序，但它们在文本上显示为错误，即红色潦草的线条。发生了什么？

I'm using the Visual Studio 2013 IDE, whatever it comes with.

我正在使用 Visual Studio 2013 IDE，无论它附带什么。

#include <iostream>
#include <ctime>
#include <string>
#include <Windows.h>
#include <cstdlib>
#include <stdlib.h>

using namespace std;

int main()
{

struct Gun
{
    string name;
    int damage;
    int cost;
    bool purchased;
    bool equipped;

} M4A1, FAMAS;

//WEAPONS INFO
M4A1.cost = 50;
M4A1.damage = 5;
M4A1.purchased = false;
M4A1.equipped = false;

FAMAS.cost = 300;
FAMAS.damage = 10;
FAMAS.purchased = false;
FAMAS.equipped = false;
//WEAPONS INFO

//-----PLAYER(BEGIN)-----

struct Player
{
    int health;
    string name;
    int money;
    int energy;

    string l_a;
    string r_a;
    string l_l;
    string r_l;

    string rank;

} Player;

//GAME PLAYER BEGIN

Player.l_a = "Normal";
Player.r_a = "Normal";
Player.l_l = "Normal";
Player.r_l = "Normal";

Player.health = 100;
Player.money = 100;
Player.energy = 100;

string plyrname;
string rank = "Private";

Player.name = plyrname;

//GAME PLAYER END

//-----PLAYER(END)-----

cout << "What is your name? ";
cin >> plyrname;

goto mmenu;


mmenu:

//-----MAIN MENU(BEGIN)-----
system("CLS");
if (Player.l_a == "Damaged")
{
    cout << "Your Left Arm is damaged! Sleep for a while to fix it!";
    Sleep(1600);
}
if (Player.r_a == "Damaged")
{
    cout << "Your Right Arm is damaged! Sleep for a while to fix it!";
    Sleep(1600);
}
if (Player.l_l == "Damaged")
{
    cout << "Your Left Leg is damaged! Sleep for a while to fix it!";
    Sleep(1600);
}
if (Player.r_l == "Damaged")
{
    cout << "Your Right Leg is damaged! Sleep for a while to fix it!";
    Sleep(1600);
}


if (Player.money >= 500 && Player.rank == "Private")
{
    system("CLS");
    cout << "You have been promoted to Private 2!";
    Player.rank = "Private 2";
    Sleep(1600);

}

if (Player.money >= 1000 && Player.rank == "Private 2")
{
    system("CLS");
    cout << "You have been promoted to Private First Class!";
    Player.rank = "Private First Class";
    Sleep(1600);
}


system("CLS");
cout << "Health: " << Player.health << ". Money: " << Player.money << " dollars." << "   Energy: " << Player.energy;
if (M4A1.equipped)
    cout << "\nGun: M4A1";
if (FAMAS.equipped)
    cout << "\nGun: FAMAS";

cout << "\n\nRank: " << Player.rank;
cout << "\n\n1) Go to Gunstore\n2) Sleep\n3) Fight\n\nAction: ";
int mmenuch1;
cin >> mmenuch1;

if (mmenuch1 == 1)
{
    goto gunstore;
}

if (mmenuch1 == 2)
{
    system("CLS");
    cout << "You sleep, restoring your energy.";
    Player.energy = 100;

    if (Player.l_a == "Damaged")
    {
        cout << "\n\nYour Left Arm was healed.";
        Player.l_a = "Normal";
    }
    if (Player.r_a == "Damaged")
    {
        cout << "\n\nYour Right Arm was healed.";
        Player.r_a = "Normal";
    }
    if (Player.l_l == "Damaged")
    {
        cout << "\n\nYour Left Leg was healed.";
        Player.l_l = "Normal";
    }
    if (Player.r_l == "Damaged")
    {
        cout << "Your Right Leg was healed.";
    }


    Sleep(1400);
    goto mmenu;
}

if (mmenuch1 == 3)
{
    system("CLS");
    goto fight;
}

//-----MAIN MENU(END)-----


fight:
srand(time(0));

system("CLS");

if (Player.r_a == "Damaged" || Player.r_l == "Damaged" || Player.l_a == "Damaged" || Player.l_l == "Damaged")
{
    cout << "You're injured, sleep to heal.";
    Sleep(1400);
    goto mmenu;
}

if (Player.energy < 40)
{
    cout << "You don't have enough energy to fight.";
    Sleep(1400);
    goto mmenu;
}

if (M4A1.equipped == false && FAMAS.equipped == false)
{
    cout << "You don't have a gun equipped.";
    Sleep(1400);
    goto gunstore;
}

if (M4A1.equipped == true && Player.energy > 40)
{

    int randnum1 = rand() % (M4A1.damage - 2 + 1) + 2;
    Player.money = Player.money + (randnum1 * 15);
    Player.energy = Player.energy - 40;

    int randnum3 = rand() % (10 - 1 + 1) + 1;
    if (randnum3 < 4)
    {

        int randnum4 = rand() % (13 - 1 + 1) + 1;

        if (randnum4 < 3)
        {
            Player.l_a = "Damaged";
        }
        if (randnum4 <= 6 && randnum4 >= 4)
        {
            Player.r_a = "Damaged";
        }
        if (randnum4 <= 9 && randnum4 >= 7)
        {
            Player.l_l = "Damaged";
        }
        if (randnum4 <= 13 && randnum4 >= 10)
        {
            Player.r_l = "Damaged";
        }



    }


    cout << "You fight, killing " << randnum1 << " enemies, making " << randnum1 * 15 << " dollars!";
    Sleep(1600);
    goto mmenu;





}




if (FAMAS.equipped == true && Player.energy > 40)
{
    int randnum2 = rand() % (FAMAS.damage - 4 + 1) + 4;
    Player.money = Player.money + (randnum2 * 15);
    Player.energy = Player.energy - 40;




    int randnum5 = rand() % (10 - 1 + 1) + 1;
    if (randnum5 < 4)
    {

        int randnum6 = rand() % (13 - 1 + 1) + 1;

        if (randnum6 < 3)
        {
            Player.l_a = "Damaged";
        }
        if (randnum6 <= 6 && randnum6 >= 4)
        {
            Player.r_a = "Damaged";
        }
        if (randnum6 <= 9 && randnum6 >= 7)
        {
            Player.l_l = "Damaged";
        }
        if (randnum6 <= 13 && randnum6 >= 10)
        {
            Player.r_l = "Damaged";
        }



    }



    cout << "You fight, killing " << randnum2 << " enemies, making " << randnum2 * 15 << " dollars!";
    Sleep(1600);
    goto mmenu;
}



//-----GUNSTORE(BEGIN)-----
gunstore:
system("CLS");
cout << "Welcome to the gunstore! You have " << Player.money << " dollars.";
cout << "\n\n1)M4A1 | Assault Rifle | \n2)FAMAS | Assault Rifle | 0\n\n3)Back\n\nAction: ";

int gschoice1;

cin >> gschoice1;

if (gschoice1 == 1)
{
    goto prchs_M4A1;
}
else if (gschoice1 == 2)
{
    goto prchs_FAMAS;
}
else if (gschoice1 == 3)
{
    goto mmenu;
}


prchs_M4A1:

system("CLS");

if (M4A1.purchased == true)
{
    cout << "You already purchased the M4A1. Would you like to equip it?\n\n1)Yes\n2)No\n\nAction: ";
    int gschoice6;
    cin >> gschoice6;

    if (gschoice6 == 1)
    {
        system("CLS");
        M4A1.equipped = true;
        FAMAS.equipped = false;
        goto mmenu;
    }
    else if (gschoice6 == 2)
    {
        goto gunstore;
    }


}


if (Player.money >= 0)
{
    system("CLS");
    cout << "Would you like to buy the M4A1?";
    cout << "\n\n1)Yes\n2)No\n\nAction: ";

    int gschoice2;
    cin >> gschoice2;

    if (gschoice2 == 1)
    {
        system("CLS");
        Player.money = Player.money - M4A1.cost;
        M4A1.purchased = true;
        cout << "You've purchased the M4A1. Would you like to equip it?\n\n1)Yes\n2)No\n\nAction: ";
        int gschoice3;
        cin >> gschoice3;



        if (gschoice3 == 1)
        {
            system("CLS");
            M4A1.equipped = true;
            FAMAS.equipped = false;

            cout << "You've equipped the M4A1";
            Sleep(1400);
            goto gunstore;
        }

        if (gschoice3 == 2)
        {
            system("CLS");
            M4A1.equipped = false;
            goto gunstore;
        }


    }

    if (gschoice2 == 2)
    {
        system("CLS");
        goto gunstore;
    }

}
else if (Player.money < 0)
{
    system("CLS");
    cout << "You don't have enough money.";
    Sleep(1400);
    goto gunstore;
}

prchs_FAMAS:

if (FAMAS.purchased == true)
{
    cout << "You already purchased the FAMAS. Would you like to equip it?\n\n1)Yes\n2)No\n\nAction: ";
    int gschoice7;
    cin >> gschoice7;

    if (gschoice7 == 1)
    {
        system("CLS");
        FAMAS.equipped = true;
        M4A1.equipped = false;
        goto mmenu;
    }
    else if (gschoice7 == 2)
    {
        goto gunstore;
    }
}



    if (Player.money >= 100)
    {
        system("CLS");
        cout << "Would you like to buy the FAMAS?";
        cout << "\n\n1)Yes\n2)No\n\nAction: ";

        int gschoice4;
        cin >> gschoice4;

        if (gschoice4 == 1)
        {
            system("CLS");
            Player.money = Player.money - FAMAS.cost;
            FAMAS.purchased = true;
            cout << "You've purchased the FAMAS. Would you like to equip it?\n\n1)Yes\n2)No\n\nAction: ";
            int gschoice5;
            cin >> gschoice5;

            if (gschoice5 == 1)
            {
                system("CLS");
                FAMAS.equipped = true;
                M4A1.equipped = false;
                cout << "You've equipped the FAMAS";
                Sleep(1400);
                goto gunstore;
            }

            if (gschoice5 == 2)
            {
                system("CLS");
                FAMAS.equipped = false;
                goto gunstore;
            }


        }

        if (gschoice4 == 2)
        {
            system("CLS");
            goto gunstore;
        }

    }
    else if (Player.money < 100)
    {
        system("CLS");
        cout << "You don't have enough money.";
        Sleep(1400);
        goto gunstore;
    }
    //-----GUNSTORE-----




}

回答by Lightness Races in Orbit

This kind of thing doesn't just magically happen on its own; you changed something! In industry we use version controlto make regular savepoints, so when something goes wrong we can trace back the specific changes we made that resulted in that problem.

这种事情不仅会神奇地自行发生；你改变了一些东西！在行业中，我们使用版本控制来创建常规保存点，因此当出现问题时，我们可以追溯导致该问题的具体更改。

Since you haven't done that here, we can only really guess. In Visual Studio, Intellisense (the technology that gives you auto-complete dropdowns and those squiggly red lines) works separately from the actual C++ compiler under the bonnet, and sometimes gets things a bit wrong.

既然你没有在这里做过，我们只能猜测。在 Visual Studio 中，Intellisense（为您提供自动完成下拉菜单和那些弯弯曲曲的红线的技术）与引擎盖下的实际 C++ 编译器分开工作，有时会出现一些错误。

In this case I'd ask why you're including both cstdliband stdlib.h; you should only use one of them, and I recommend the former. They are basically the same header, a C header, but cstdlibputs them in the namespace stdin order to "C++-ise" them. In theory, including both wouldn't conflict but, well, this is Microsoft we're talking about. Their C++ toolchain sometimes leaves something to be desired. Any time the Intellisense disagrees with the compiler has to be considered a bug, whichever way you look at it!

在这种情况下，我会问为什么你同时包含cstdlib和stdlib.h；您应该只使用其中一种，我推荐使用前者。它们基本上是相同的头文件，一个 C 头文件，但cstdlib将它们放在命名空间std中以便“C++-ise”它们。从理论上讲，包括两者不会冲突，但是，这就是我们正在谈论的 Microsoft。他们的 C++ 工具链有时会留下一些不足之处。任何时候 Intellisense 不同意编译器都必须被视为错误，无论您如何看待它！

Anyway, your use of using namespace std(which I would recommend against, in future) means that std::systemfrom cstdlibnow conflicts with systemfrom stdlib.h. I can't explain what's going on with std::coutand std::cin.

无论如何，您使用using namespace std（我将来会建议反对）意味着std::system从cstdlib现在开始与systemfrom发生冲突stdlib.h。我无法解释std::coutand发生了什么std::cin。

Try removing #include <stdlib.h>and see what happens.

尝试删除#include <stdlib.h>，看看会发生什么。

If your program is building successfully then you don't need to worry too much about this, but I can imagine the false positives being annoying when you're working in your IDE.

如果您的程序构建成功，那么您就不必为此担心太多，但是我可以想象，当您在 IDE 中工作时，误报会很烦人。