C++ :: Program Crashing When Reading Text From Files
Feb 5, 2014
I'm writing a code obfuscator in C. Debugger shows no errors in the code, but the program crashes after compiling -- I'm guessing it has something to do with while loops or reading data from files.
Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
// list off all replaced elements
typedef struct ReplaceList {
char *from;// from string
char *to;// to string (random)
I want to make a program that opens a text file and checks the usernames listed in the text files to see if the names are registered on a site such as twitter. How easy would this be to make, what things would I need to know?
program that I am working on. I want to use fgets() in my program so I could handle multiple words from a text(to be able to handle spaces). I get a weird result when running the program.
i am trying to doing my project what is: Diff - The program should compare two text files and list the differences, i.e. lines and columns of the beginning and the end of a given difference.
I want to make a program that can know the current time and create a new .txt file.For example if its Monday to day then when its Tuesday it crates a new txt file called Tuesday.I really don't know how to go about this.I know i will need to use the time.h library.
Basically I am to create a program that will read two saved text files; one is [2x4] ~ (matrixA.txt) and another is [4x2] ~ (matrixB.txt). The program is supposed to read both text files, multiply them, and generate an output that will be saved as ~ (matrixC.txt).
C:UsersLeDerpHW1.c: In function `main': HW1.c:27: parse error before `int' //Line 28 C:UsersLeDerpHW1.c: At top level: HW1.c:34: warning: parameter names (without types) in function declaration //35 HW1.c:34: warning: data definition has no type or storage class //35 HW1.c:35: parse error before `for' //37
I am trying to make a simple program, I would like it to be able to do the following, Write a program that opens two text files (input1.txt and input2.txt) for input .The program should write the followings in the two files. input1.txt:
This is the first line in input1.txt. This is the second line in input1.txt. This is the third line in input1.txt. This is the fourth line in input1.txt.
input2.txt:
This is the first line in input2.txt. This is the second line in input2.txt. This is the third line in input2.txt.
What would be the best way to go about doing this? I wrote the program below, but I don't think that it works.
#include <iostream> #include <fstream> #include <string> int main() { using namespace std; string input1;
My program is crashing when I'm trying to call b = a. What has me confused is that when I call c = d = b, it all works fine.
I actually think I see it now that I posted this. In operator= I'm changing the size, but I'm not changing the size of the array that it's pointing to correct? I'm keeping it as 'p = new T[size]' rather than changing it to 'p = new T[x.size]' correct?
#include <iostream> #include "Array.h int main() { std::cout << "creating Array< int > object a ...
I just finished coding a program that is based on polymorphism and inheritance but when I ran the program it crashed? I do not know what is the cause of the program crashing.
#include<iostream> #include<string> using namespace std; class Shape{ float density;
#include<stdio.h> //bookData structure struct bookData { int recordNum; char description[ 15 ]; int booksBought; double bookCost;
[code]...
I am able to add records and show records, no problem. But when I go to delete a record, it crashes immediately after inputting the record number I want to delete. I don't see why. I've set it up exactly like the example in my book, having of course changed the variable names for my program. Does it have something to do with the pointer?
When I go to run the Fibonacci function ( fib ), it begins to return incorrect calculations towards the higher numbers, but then seems to correct itself for a little bit, but then does it again and ultimately crashes. And the program seems to be crashing at random numbers. Sometimes the it will make it up to F(55), other times it will only get to F(20).
Also, when I go to run the program on a Linux server, it segfaults, but it doesn't when I just run it on my IDE. the function adds two arrays with individual digits together. It does this to allow the program to add numbers that would exceed the boundaries of INT_MAX.
Here is the header file "Fibonacci.h":
Code:
#ifndef __FIBONACCI_H #define __FIBONACCI_H typedef struct HugeInteger { // a dynamically allocated array to hold the digits of a huge integer int *digits; // the number of digits in the huge integer (approx. equal to array length) int length; } HugeInteger; }
I was writing a program and it started crashing on exit (segment fault), after the 'return 0' in main(). I figure it's an std destructor.
I started with the program I was writing and just stripped out as much as I could, while making sure the crash persisted. If I remove any of the remaining code the crash disappears, even the seemly unrelated or scoped code.
I am writing a piece of code that requires me to display the last 1000 lines from a multiple text files (log files). FYI, I am running on Linux and using g++.
I have a log file from which - if it contains more than 1000 lines, I need to display the last 1000 lines. However, the log file could get rotated. So, in case where the current log file contains less than 1000 lines, I have to go to older log file and display the remaining. For e.g., if log got rotated and new log file contains 20 lines, I have to display the 980 lines from old log file + 20 from current log files.
What is the best way to do this? Even an outline algorithm will work.
I am writing a program to hide files behind other files using Alternate Data Streams in Windows NTFS file systems.
The program is as follows:
Code:
#include <stdio.h> #include <stdlib.h> int main(void){ char hostfile[75], hiddenfile[75], hiddenFileName[15] ; printf("Enter the name(with extension) and path of the file whose behind you want to hide another file: "); scanf("%75s", hostfile);
[Code]...
The complier is showing error as "Extra Perimeter in call to system" but I am not getting where?
How do I read a .pdf file using C++? When I try to open it using myfile.open ("example.pdf"); but all I see is some Crazy Symbols. Is there any way to open ?
It has something to do with the lines at the bottom of the code. It doesnt cout anything. The program just crashes upon execution. First, it asks me the amount of students i want to handle. I enter '1'. Then it asks me if i want to read in from external file and i enter 'Y'. then the exe just crashes
Name: Mary Smith Exam 1: 65 Exam 2: 79.1234 Exam 3: 70.24
Becomes something like this in the output file:
Name: Parker, Peter Average Score: 92.28 Grade: A
Name: Smith, Mary Average Score: 71.45 Grade: C
I know I'm supposed to read the whole file, but I'm getting really confused on how to take the name of each student separately without recording Exam 1, 2, and 3. I'll be able to do the average score and grade on my own.
Is there a way to indicate how many records exist in a given file? For example, vectors have the vector.size() command to show the number of given elements. Is there a such command for files and records?
The directions are to write a program that reads sorted integers from two separate files and merge the contents of the file to an output file (third file). The only standard output will be any errors to be reported and a “FINISHED” statement after all items have been processed.
file1.txt 2 4 6 8 10
file2.txt 1 5 11 12 15
Output.txt 1 2 4 5 6 8 10 11 12 15
This is the code I have so far, but it is not working, and I have put the two txt files in the same directory as my .cpp file. It is not working though still. What have I done wrong and how can I fix it to read these integers from the two numbers and merge the contents into a third file?
#include <iostream> #include <fstream> using namespace std; int main() { int num1; int num2; ifstream inputFile;
I'm messing around with reading and writing files. The first file creates a small txt file. Simple enough
#include <iostream> #include <fstream> #include <string> using namespace std; int main(){ string name; string desc;
[Code] ....
It does what it should. It creates a text file "items.txt" .... It reads as such:
dagger,a dagger,15,10,0,1,3,1,0,0,0,1,0,0,0,0,0,1
The second file is meant to read the file and place the data back into the variables. This happens, but the data crams itself into the first variable, and the rest of them collect the trash that's in memory.
#include <iostream> #include <fstream> #include <string> using namespace std; int main() { string name,desc;
[Code ....
I need to get "dagger" into name, "a dagger" into description, and each value with their perspective variable. I'm sure I need some type of "separator". Hopefully I can use the comma. Before it's over, I will have about a hundred items that will need to be read into a class of items.