C++程序无法从文件中读取字符

Question

所以,我正在尝试让程序读取文件并打印出晴天,阴天和下雨天的数量.它只是保持打印0.我缺少什么？我试图将文件从.dat更改为.txt但仍然是相同的结果.这是数据文件中的内容:

RRCSSSCSCRRRCSCSCSSRSCCRCRRCSS SSSCCSSSCCSSSCCSSSCRCRCCSSSSSS SSSSCSSSCSSSCRRCCCSSSSSCSSSSCS

  #include <iostream> 
    #include <fstream>
    #include <iomanip>
    #include <string>  

    using namespace std;

    int main()

    {  

    const int MONTH = 3;

    const int DAY = 30;

    char name[MONTH][DAY] = {"June", "July", "August"};
    char rain = 'R'; 
    char sun = 'S';    
    char cloud = 'C';    
    char letter;    
    int day = 0;    
    int count = 0;    
    int rainy = 0;    
    int cloudy = 0;
    int sunny = 0;          

    ifstream inputFile;

    cout << " Weather for Summer Months\n";

    cout << "--------------------\n\n";   

    inputFile.open("C:\rainorshine.dat");    

    if (inputFile)
    {
    cout << "Error opening data file.\n";
        system("pause");
    }
    else

    {   cout << "Weather Report\n\n";

    while (inputFile >> letter)
    {
        cout << letter << endl;  // print out characters read from file 
    }             
   for (count = 0; count < MONTH; count++)    
    {    
        for (day = 0; day < DAY; day++)    
        {    
            cout  << name[count][day];    
           inputFile >> name[count][day];    
            if (name[count][day] == 'R')    
                rainy++;
                else if (name[count][day] == 'S')    
                sunny++;            
            else if (name[count][day] == 'C')    
                cloudy++;
        }

        cout << endl;        
        cout << "  Sunny Days Total: " << rainy << endl;    
        cout << "  Rainy Days Total: " << sunny << endl;    
        cout << "  Cloudy Days Total: " << cloudy << endl << endl;      
    }
    system("pause");
        return 0;
    inputFile.close();


    }
    }

Answer 1

这个:

while (inputFile >> letter)
{
    cout << letter << endl;  // print out characters read from file 
}  

通过所有字母,当它完成时,你就在文件的末尾.因此,当您尝试在for循环中再次读取数据时,没有什么可读的.