Question

所以我正在编写一个程序，其中多个文件都采用命令行参数。例如，我在命令提示符下输出program.exe file1.txt file2.txt。由于某种原因，我的输出没有显示正确的结果。当我输入两个文件名时，它只显示第一个文件名两次。我附上了一个截图。它也没有计算字符或字符。我认为它必须对局部或全局变量做一些事情，但我已经尝试过将它们放在一处。或许我对自己的错误视而不见。我会很感激任何建议。

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

using namespace std;
int i;
char ch;
int charcounter=0;
int wordcounter=0;
int linecounter=0;

int main(int argc, char* argv[])
 {
 for ( i = 1; i < argc; i++ ){

  if (argc<2){
    cout<<"you did not enter enough arguments"<<endl;
  }
    else {
        string filename;
        ifstream thefile;
        filename=argv[i];

        thefile.open(argv[i]);
        if (thefile.is_open() && thefile.good())
        {
                while (ch!= EOF){
                    charcounter++;

                    if (ch ==' ')
                    wordcounter++;
                   else if (ch =='\n')
                        linecounter++;

                ch=thefile.get();
                cout<<setw(12)<<"Lines"<<' '<<linecounter;
                cout<<' ';
                cout<<setw(12)<<"Words"<<' '<<wordcounter;
                cout<<' ';
                cout<<setw(12)<<"Characters"<<' '<<charcounter;
                cout<<' ';
                cout<<"filename"<<' '<<argv[i];
                thefile.close();
            }
        }
    }
}
 }

Answer 1

这里有很多问题。首先，您使用data Form :: * -> * where Var :: Form s Prim :: (Sat s r) => Pred s -> Marker r -> Form s Simple :: (Sat s r) => Pred s -> Marker r -> Form s Derived :: Form r -> Suffix r s -> Form s Complex :: (Sat s r, Sat t P) => Form s -> Infix r -> Form t -> Form s data FormA a where FormA :: (Pred s -> Marker t -> a) -> (Pred u -> Marker v -> a) -> (a -> Suffix w x -> a) -> (a -> y -> a -> a) -> FormA a foldForm :: FormA a -> Form s -> a foldForm alg@(FormA prim _ _ _) (Prim p m) = prim p m foldForm alg@(FormA _ simple _ _) (Simple p m) = simple p m foldForm alg@(FormA _ _ derived _) (Derived f s) = derived (foldForm alg f) s foldForm alg@(FormA _ _ _ complex) (Complex f1 i f2) = complex (foldForm alg f1) i (foldForm alg f2)而不进行初始化。其次，您在读取第一个字符后关闭文件流。您可能希望在<?xml version="1.0" encoding="UTF-8"?> <module xmlns="urn:jboss:module:1.0" name="com.sybase"> <resources> <resource-root path="jconn3.jar"/> </resources> <dependencies> <module name="javax.api"/> <module name="javax.transaction.api"/> </dependencies> </module>块之后打印统计信息和文件名。适当的缩进将有助于使事情更清楚。

我的程序不计算行数单词或字符？

1 个答案: