outData.txt不输出正确的价值观

Question

我无法采取从inData.txt一个＃和输出值到outData.txt 是在我inData.txt值

是： 10.20 5.35

的出现在我的outData.txt值是： 矩形： 长度= -92559631349317830000000000000000000000000000000000000000000000.00，宽度= -92559631349317830000000000000000000000000000000000000000000000.00，面积= 8567285355521621000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.00，周长= -370238525397271320000000000000000000000000000000000000000000000.00

这里是我的代码（现在我只是工作，输出的长度，宽度，面积和周长）

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

using namespace std; 

int main() 

{ 
// Filestream Variable declaration 

ifstream inFile; 
ofstream outFile; 

// Variable Declaration 

double length, width, areaOfRectangle, perimeter, radius, areaOfCircle,   beginningBalance, interestRate, pi, 
     circumference, endingBalance; 
string firstName, lastName; 
int age; 
char ch; 

// Opening Filestream Variables 

inFile.open("inData.txt"); 
outFile.open("outData.txt"); 

// Data Manipulation 

outFile << fixed << showpoint; 
outFile << setprecision(2); 

cout << "Processing Data..." << endl; 

// Variable Association 


inFile >> length >> width; 
outFile <<"Rectangle:" << endl; 
areaOfRectangle = length * width; 
perimeter = (length * 2) + (width * 2); 
outFile <<"Length= " << length << ", Width= " << width << ", Area= " << areaOfRectangle << ", Perimeter= " << perimeter << endl; 





// Closing Filestream Variables 

inFile.close(); 
outFile.close(); 






return 0; 

    } 

Answer 1

这将检查你的代码：

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

using namespace std; 

int main() 
{ 
    // Filestream Variable declaration 
    ifstream inFile; 
    ofstream outFile; 

    // Variable Declaration 
    double length, width, areaOfRectangle, perimeter, radius, areaOfCircle, beginningBalance, interestRate, pi, 
     circumference, endingBalance; 
    string firstName, lastName; 
    int age; 
    char ch; 

    // Opening Filestream Variables 
    inFile.open("inData.txt"); 
    outFile.open("outData.txt"); 

    if(inFile.fail()) 
    { 
     cerr << "Error opening inData.txt" << std::endl; 
     return -1; 
    } 

    if(outFile.fail()) 
    { 
     cerr << "Error opening outData.txt" << std::endl; 
     return -1; 
    } 

    // Data Manipulation 
    outFile << fixed << showpoint; 
    outFile << setprecision(2); 

    cout << "Processing Data..." << endl; 

    // Variable Association 
    if(!(inFile >> length >> width) 
    { 
     cerr << "Failed to read values." << std::endl; 
     return -1; 
    } 

    outFile <<"Rectangle:" << endl; 
    areaOfRectangle = length * width; 
    perimeter = (length * 2) + (width * 2); 
    outFile <<"Length= " << length << ", Width= " << width << ", Area= " << areaOfRectangle << ", Perimeter= " << perimeter << endl; 

    // Closing Filestream Variables 
    inFile.close(); 
    outFile.close(); 

    return 0; 
}