c++ - 我得到的是我所有的输出，而不仅仅是一个

编写一个程序来对剪刀石头布游戏进行评分。两种用户分别以P，R或S键入。程序随后宣布获胜者以及确定获胜者的基础:纸张覆盖岩石，碎剪刀，剪刀剪纸或没人获胜。确保允许用户使用小写字母和大写字母。

//System Libraries
#include <iostream> //Input/Output Library
#include <iomanip>
#include <string>
using namespace std;

//User Libraries

//Global Constants, no Global Variables are allowed
//Math/Physics/Conversions/Higher Dimensions - i.e. PI, e, etc...

//Function Prototypes

//Execution Begins Here!
int main(int argc, char** argv) {
    //Set the random number seed

    //Declare Variables
    float
           P,p,
           R,r,
           S,s,
           p1,p2;

    //Initialize or input i.e. set variable values
    cout<<"Rock Paper Scissors Game\n";
    cout<<"Input Player 1 and Player 2 Choices\n";
    cin>>p1;
    cin>>p2;
    //Map inputs -> outputs
    if (p1 == p2)
    cout<<"tie";

    if ((p1 == P) && (p2 == R))
     cout<<"Paper covers rock.";
    if ((p1 == p) && (p2 == r))
     cout<<"Paper covers rock.";
    if ((p1 == P) && (p2 == r))
     cout<<"Paper covers rock.";
    if ((p1 == p) && (p2 == R))
     cout<<"Paper covers rock.";

    if ((p1 == S) && (p2 == R))
        cout<<"Rock breaks scissors.";
    if ((p1 == s) && (p2 == r))
        cout<<"Rock breaks scissors.";
    if ((p1 == S) && (p2 == r))
        cout<<"Rock breaks scissors.";
    if ((p1 == s) && (p2 == R))
        cout<<"Rock breaks scissors.";

    if ((p1 == S) && (p2 == P))
        cout<<"Scissors cut paper.";
    if ((p1 == s) && (p2 == p))
        cout<<"Scissors cut paper.";
    if ((p1 == S) && (p2 == p))
        cout<<"Scissors cut paper.";
    if ((p1 == s) && (p2 == P))
        cout<<"Scissors cut paper.";

    //Display the outputs

    //Exit stage right or left!
    return 0;
}

预期:

Rock Paper Scissors Game
Input Player 1 and Player 2 Choices
Paper covers rock

我的结果:

Rock Paper Scissors Game
Input Player 1 and Player 2 Choices
rs
tiePaper covers rock.Paper covers rock.Paper covers rock.Paper covers rock.Rock breaks scissors.Rock breaks scissors.Rock breaks scissors.Rock breaks scissors.Scissors cut paper.Scissors cut paper.Scissors cut paper.Scissors cut paper.

最佳答案

您可以使用tolower而不是比较字母大小写

并且还使用char而不是float

您只需要声明用户输入变量

如果

，则使用else

代码:

#include <iostream> //Input/Output Library
#include <iomanip>
#include <string>
using namespace std;

//User Libraries

//Global Constants, no Global Variables are allowed
//Math/Physics/Conversions/Higher Dimensions - i.e. PI, e, etc...

//Function Prototypes

//Execution Begins Here!
int main(int argc, char** argv) {
    //Set the random number seed

    //Declare Variables
    char p1,p2;

    //Initialize or input i.e. set variable values
    cout<<"Rock Paper Scissors Game\n";
    cout<<"Input Player 1 Choice\n";
    cin>>p1;
    cout<<"Input Player 2 Choice\n";
    cin>>p2;
    //Map inputs -> outputs
    if (p1 == p2)
        cout<<"tie";
    else if ((tolower(p1) == 'p') && (tolower(p2) == 'r'))
        cout<<"Paper covers rock.";
    else if ((tolower(p2) == 'p') && (tolower(p1) == 'r'))
        cout<<"Paper covers rock.";

    //or combine above 2 statements to
    //else if (((tolower(p1) == 'p') && (tolower(p2) == 'r')) || ((tolower(p2) == 'p') && (tolower(p1) == 'r')))
        //cout<<"Paper covers rock.";

    else if ((tolower(p1) == 's') && (tolower(p2) == 'r'))
        cout<<"Rock breaks scissors.";
    else if ((tolower(p2) == 's') && (tolower(p1) == 'r'))
        cout<<"Rock breaks scissors.";
    else if ((tolower(p1) == 's') && (tolower(p2) == 'p'))
        cout<<"Scissors cut paper.";
    else if ((tolower(p2) == 's') && (tolower(p1) == 'p'))
        cout<<"Scissors cut paper.";

    //Display the outputs

    //Exit stage right or left!
    return 0;
}

关于c++ - 我得到的是我所有的输出，而不仅仅是一个，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/54211004/