C/C++ :: Error Handling For File Opening And Reading
Apr 23, 2014
I am writing to write a program and performs the following tasks
- Reading a file (txt file contains some temperature values)
- Display the temperature values (contents of the file)
- Calculating the average of the temperature values in the file.
- finds the maximum and minim value of temperature in the file.
The program is user interactive and waits for the user input and process according to his input (choice)
I have managed to complete the program and covered all the expect except the error handling for file opening and reading, although I have managed to do it for the part one part (i.e for the choice == 1)
I can repeat it for the other choices (i.e for 2, 3 ) but I do not want to repeat the code and do it in a different function or do it once for all. While making an attempt I can not handle the rest of the program and all the program turns into a mess.
#include <iostream>
#include <fstream>
#include <iomanip>
int menu();
int myChoice(char);
char inputValidating();
[Code] .....
Need Error handling for file opening and Reading that is used once, So far I have managed to do it for choice 1
Text file can be found in the attachment
View 3 Replies
ADVERTISEMENT
Nov 6, 2013
My project includes opening and reading a text file ("customers.txt"). This is my text file:
6
Joe
P 10.02 Y
Mary
r 15.50 N
Dan
U 19.00 y
Victoria
R 6.50 y
Nick
n 0 Y
Vigo
p 18.27 N
I wrote this code, but it seems not to find the text file.
#include <iostream>
#include <fstream>
using namespace std;
int main() {
ifstream inputFile;
int number;
[Code] ......
View 6 Replies
View Related
Nov 8, 2014
ofstream infile;
infile.open("Input.txt");
if(infile.fail()) {
cout << "Error Opening File in Input" << endl;
system("pause");
exit(1);
}
So I'm trying to see if it fails, but if i change "Input" name would the computer just create a new file name of it for example if i change "Input" to "asdf" the computer is just going to create "asdf" how do i fix it.
View 4 Replies
View Related
Nov 24, 2013
I have this code for a computer project... (store management) but the character strings are not copied on text file..
#include<iostream.h>
#include<conio.h>
#include<fstream.h>
class Store {
public:
char *item_name[5];
store()
[Code] .....
Now when i run the program, it gives a error :::
ERROR
address 0x0
How can i write these strings to the text file?
View 2 Replies
View Related
Jul 3, 2014
I'm attempting to write a method that opens a file from Excel, finds a value within the spreadsheet and returns the value from another column along that row.
So I know I want to pass in the filename and the item I'm initially searching for, plus also a column identifier and that way I can locate so something like this:
public static int GetParameter(string filename, string parameter, string channel)
I've attached a snip of the spreadsheet so you can see what I'm lokoing at. I want to open the spreadsheet, find the parameter I've specified, move along the column to find the channel I've specified and finally read and return the value.
The bit that's troubling me is I have no idea how to work with excel in c#. I've done a few searches and I believe I need to add thiese references
using DocumentFormat.OpenXml.Spreadsheet;
using DocumentFormat.OpenXml.Office2010.Excel;
using DocumentFormat.OpenXml.Office.Excel;
using Excel = Microsoft.Office.Interop.Excel;
using Excel;
I have added those usings and also made reference to them in my project. I was also looking at this as well but it just confuses me in how I add my parameters and modify the code to suit:
using System;
using System.Windows.Forms;
using Excel = Microsoft.Office.Interop.Excel;
namespace WindowsApplication1 {
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
[Code] ....
View 5 Replies
View Related
Oct 15, 2014
I'm in a CIS 143 class which is Introduction to Programming using C++. We've been assigned a lab with little to no detail on how to do the things listed.
The purpose of this lab is to practice the file input and output concepts. For this lab you may assume that the input files exist and contain appropriate data inside of them.
Four separate text files* which contain the following lines, different for each file.
(*: This isn't on the lab, but don't worry about what the name, age, id, and major are. those can be random and I can just change them what they need to be)
Name
Age
Student ID Number
Major
Your program should ask the user which of the four input files they would like to open, and then read the contents from the file. Once the contents have been read in, it should output to both the screen and a file named "output.txt" the four values were read in, arranged as follows:
"Hello <name>! You are a <age> years old <major> student, and your ID number is <ID number>"
Now I am by no means saying "Do it for me". I just need to know how to have a user type file1, file2, file3, or file4, and then have the program open that file, then have the output.txt file arrange the wording into the sentence above.
This is what I have so far and I don't think it is anywhere near correct:
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int main() {
ifstream inFile;
string file1;
string file2;
[code]....
View 1 Replies
View Related
Jul 18, 2014
Recently I tried a project template from infragistics
Infragistics Windows Forms -ProjectManager
every time I open the design form it desply this message.
What should I do to resolve it.
View 3 Replies
View Related
Feb 6, 2013
I am working in Eclipse, and it keeps giving me this error that I do not understand. In the fillTable function, "is >> kP[i]" Eclipse says: no match for 'operator>>' in 'is >> *(((TranslationTable<int, std::string>*)this)->TranslationTable<int, std::string>::kP + (+(((unsigned int)i) * 8u)))'.
#ifndef TRANSLATIONTABLE_H_
#define TRANSLATIONTABLE_H_
#include "KeyValuePair.h"
#include <iostream>
#include <cstdlib>
[Code]....
View 3 Replies
View Related
Aug 2, 2014
I have been using a Boost NonCopyable library in Microsoft Visual Studio 2013.
What I have is the following error message:
Error1error C2280: 'boost::noncopyable_::noncopyable::noncopyable(const boost::noncopyable_::noncopyable &)' : attempting to reference a deleted functionc:usersjohndocumentsvisual studio 2013projectsdonttreaddonttreaddonttread.cpp181DontTread
Now what I want to rectify the error is to throw an exception, so that the program can compile smoothly.
View 4 Replies
View Related
May 9, 2014
#include<iostream>
using namespace std;
void E();
void T();
void F();
void match(char m);
[Code] ....
I have written this code for predictive parser. It is working for valid input but it is not working for invalid input when i give invalid input it says its valid. How to do error handling in predictive parser.
View 3 Replies
View Related
Jan 30, 2015
void main() {
clrscr();
cout<<" Menu";
cout<<"
1. Display all the employees' info.";
cout<<"
2. Display specific employes' info.";
cout<<"
3. Display employee with max salary.";
[code]....
Declaration syntax error at line 89, I don't get this everything is proper.
View 1 Replies
View Related
Dec 3, 2013
Code:
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int encrypt_data(FILE *);
[Code] ....
I am trying encrypt the file "encrypt" when I enter it I get "Error in reading file"
I think its a problem with the fgets() and scanf()...I tried both fgets out and then scanf but I get the same error.
I look in the directory and see that when I enter a file to be encrypted a blank file with a "?" at the end is created in the directory. so I try to encrypt "encrypt" it shows error then creates "encrypt?"
I then tested it by entering a random file name that does not exist
EXAMPLE
Please enter file to be encrypted: fakefilename
Error in reading file.
I look in the directory the non existent file now is listed "fakefilename"
View 1 Replies
View Related
Mar 21, 2013
I am using OpenCASCADE environment to read STL file! I face a problem, with forward declaration error with the following
void StlReadIn::STL_Import() {
std::string FileName;
std::cout<<"
Enter the file name
";
std::cin>>FileName;
[Code] .....
Error message:
stlreadin.cpp:26:47: error: invalid use of incomplete type ‘struct StlMesh_Mesh’
/usr/local/oce-0.9.1/include/oce/Handle_StlMesh_Mesh.hxx:23:7: error: forward declaration of ‘struct StlMesh_Mesh’
View 2 Replies
View Related
May 20, 2013
Below is the code for reading a struct that was stored in a binary file. Problem is while reading from file I get the name without first character and age is always equal to zero which it should not be.
#include <iostream>
#include <conio.h>
#include <fstream>
struct abc {
char name[100];
int age;
[Code] .....
View 3 Replies
View Related
Jan 4, 2014
I finished my Enigma cipher simulator...how should I write the error handling code? Should I throw an exception in main, or in the Enigma ctor and Encrypt() fn when the user enters a non-alphanumeric character?
Rotor.hpp
Code:
#ifndef ROTOR_HPP
#define ROTOR_HPP
class Rotor {
public:
Rotor(char pos='A');
Rotor(const Rotor & rhs);
Rotor& operator=(const Rotor& rhs);
[Code] ....
Output
Code:
Enter rotor settings:
ABCDEFGHIJ
Enter cleartext:
HELLO WORLD
Ciphertext:
0O258 SGY5V
View 3 Replies
View Related
Aug 4, 2012
The code is compiled.
If I do loops for push and pop fucntions in main.cpp the same size as Stoke everything is working properly
If loops are larger than the Stack size that goes here is a picture in the console (see screen print)
Code:
//
//(---.Array_hpp---)
//
#ifndef Array_HPP// Preprocessor gates
#define Array_HPP
#include <sstream>
#include <iostream>
#include <exception>
template <class Type>//Remove the "=double" default parameter.
[code]....
View 4 Replies
View Related
Mar 6, 2015
im trying to read employee information from a file using structures but im having problems with getting the file to open and read in the information
Code:
Write a programt that inputs (at most 50) records from a sequential file
#include <stdio.h>
#include <stdlib.h>
struct employee // employee structure definition
}
[code]....
View 13 Replies
View Related
Apr 3, 2012
I have this image/video compression project that is to be done in C. I've been given this source code by my supervisor which is supposed to be a working one.
Assuming I have a sequence of 5 images in .pgm format (image41.pgm, image42.pgm .... image45.pgm). Some of the code involved is
Code:
#define START_FRAME 41
#define END_FRAME 45
#define SKIP_FRAME 1
#define INPUT_STRING "/home/folder/image%03d"
int main(){
int frameNo = START_FRAME
nx=1920, ny=1080;
char fileName[128];
[Code] ....
When I tried to compile the code using make file (shell script), I got this error message "In function 'readPgm' format '%d' expects argument of type 'int *', but argument 3 has type 'unsigned char *' "
Can identify what the problem is and how to rectify it?
View 10 Replies
View Related
Dec 20, 2014
I'm new in programming, and trying to write a code in C. The requirement is following - to write a text, and to find frequency of 1 chosen character in it. The main thing is that program should check user input (for example, I want to check if user entered "char" --> then correct, or if entered "int" --> not correct). But the program still doesn't check. So I have:
Code:
#include <stdio.h>
int main(){
char c[1000], ch;
char i, count=0;
printf("Enter a text: ");
gets(c);
[Code] ....
Am I on my right way using if/else?
View 3 Replies
View Related
Jul 18, 2013
I have attempted a couple of different times to open a .txt file in a program, however it always goes to the "file was not opened."
Code:
#include <stdio.h>
#include <stdlib.h>
int main()
{
FILE *inFile;
[Code]....
View 8 Replies
View Related
Apr 26, 2013
I have problems opening a file within a directory.
#include <dirent.h>
#include <string>
#include <vector>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
[Code] .....
Error Message:
$ ./dirsearch ~/Documents/College/textfiles/
[..]
[yomama.txt]
Error : Failed to open entry file - No such file or directory
Here are my current file permissions:
textfiles$ ls -l
total 8
-rw-rw-rw- 1 jav jav 7 Apr 26 13:14 moretext.txt
-rw-rw-rw- 1 jav jav 10 Apr 26 12:38 yomama.txt
View 6 Replies
View Related
Nov 2, 2014
When I try to open the cpp source in Visual Studio, it just opens a blank notepad window. The cpp file says its 4 kb and there was code in it.
View 5 Replies
View Related
Feb 21, 2015
I would like to know what is the best compiler for a very simple program. I'd like to be able to print a pdf file without opening it.
View 3 Replies
View Related
Dec 11, 2013
I need to find if a file is locked, but I dont want to open the file as I will be checking 1000's of files.
can I do that in C++ or VC++
View 10 Replies
View Related
Apr 4, 2013
How to open a file and just print what is in that file on the screen. I though maybe I had the directory wrong but putting G: or G: give me the same result. When I select 1 it just goes to the next line and doesn't print anything.
Code:
int getchoice(void)
{
int num;
int choice;
FILE* outputfile;
[Code] ....
View 12 Replies
View Related
Sep 6, 2013
how to open an audio file using c. write a code to open an audio file.
View 2 Replies
View Related
