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"
Back again with a random bug that I can't seem to track down. My error is in my main.cpp file. I get a C2248 error on line 54, there I'm doing:
t.makeEmpty(t.root)
I know why, because it's a private member...but it should have access in so far as everything is concerned. I double checked my makeEmpty code and it's good to go so far as I can tell. I can't quite iron out where the disconnect is.
I am trying to make a simple program for encrypting a char* with the XOR operator. The code compiles and links perfectly, but I get an Access violation runtime error:
#include <iostream> #include <cstdlib> #include <cstdio> #include <string> #include <fstream> using namespace std; int main(int argc, char** argv) {
How to compact my code. I have a file that my program will read several times. Each time a different test will check it for something specific. I can't check it all at once because I let the user specify what to check. I'm currently using an ifstream with a while loop to read until the end of file.
Here are three approaches :
1. I keep a static ifstream in a function and call it each time I want a new line to read. The function will "remember" what line is at and returns a new line each time (I suspect this can work but I'm not 100% sure). Each function can then be separated and call readline to get a new line back.
2. I make one giant while loop and make case statements that call the correct case and pass the string all the way down to the test function that is being run.
3. Write everything to some sort of array buffer. The file isn't terribly big about 1000 lines.
What should I do? Is the first approach even worth the effort to cut down a few lines of code? The second case doesn't seem to be much better as I cannot reuse anything.
Code: ig_cfunc.cpp:1609: error: `calc_rel_branch_degree' undeclared (first use this function)
I have deleted all of the objects and recompiled to make sure that everything is in sync. I can't see what the issue is here and I'm not sure what to do next. This code actually worked until I changed the name of the function, so the types are all correct and such. This is the format I use for all external functions ....
I have a script that checks and compares two lists from an offline dictionary. Dictionary.txt which has a lot of words in it. input.txt will compare to dictionary.txt and print out anything that matches in CMD.
However, instead of using an offline dictionary is there anyway to make a code check an online dictionary? If so, would this process be slow or fast?
I am trying to use struct to store variables from a text file and use them in the main program. I have first tried running the program without using struct and declaring the variables within the main program and it runs fine. But after using struct, it gives no compilation error and a segmentation fault as output. Also, if the size of file/variable size is unknown can I declare variables as char string[]??
The code is as below:
Code:
#include<stdio.h> struct test { char string1[10000];
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)))'.
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’
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.
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
I have been assigned a project by my teacher to make a program in c++ which will be able to encrypt a text file, a .docx file or a pdf document !!! Encrypting a text file is easy i have already done that but how do i encrypt a docx file or a pdf file ???
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 }
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
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?
I am writing a program for AES Encryption which is all but done as far as that the program encrypts the text and prints the encrypted text in the command prompt:
Encrypted text output on command prompt = 39 25 84 1d 02 dc 09 fb dc 11 85 97 19 6a 0b 32
However, my project asks to "read blocks of data from a data file". Therefore I need to alter the main function to read the following arrays from a data file.
The first line being the CipherKey array and the second being PlainText. I'm not sure if the '0x' or the commas are required.
I basically want to take the data from a file, store them in arrays in the program itself, encrypt the Input array PlainText and create a new file with the encrypted output array stored in it (I will deal with this part of the program after I get the input file done first).
I'm doing a practice problem where I need to read pseudo code and understand what it does.
For this code, I believe it will move the robot forward while i<650, so it moves it forward for 650 steps in total. Then it sets the motors to 0 when it's finished.
Code: while(i<650) { rotateCW(2); rotateCCW(1); Delay1KTCYx(50); i++; LATD=0x00; //Set all Port D to 0 }
This code I'm having the most trouble with. So while(1) the pot(potentiometer) read's the ADC. Then it scales the adc, not 100% sure what the +20 and *.22 mean, I think it has to do with binary conversions?
Now it sets pin 1 of port 1 to 0, delays based on pot above, and sets it back to 1, and delays again. I assume something to do with controlling motor speed based on the potentiometer.
Code: void main(void){TRISD = 0x00; // Setting port D to outputs LATDbits.LATD0 = 1; // Setting bit 0 of port D to 1 while(1) { pot = readADC(); pot = pot * 0.2297 + 20;
[Code] ......
My best guess is: The car moves forward 400 steps, stop, turn right for 230 steps, stop. At this point it would begin moving straight, and it would turn left/right as needed to keep the robot in the center of the track.
Code: void main(void) { for(i=0;i<400;i++) { rotateCW(2,motor); //Rotate motor two (one step) rotateCCW(1,motor); //Rotate motor one (one step) Delay1KTCYx(50);
I know it sounds strange but I've seen things that have files which contain source code (usually in something in Python or such) and how this is read on run-time?
I've had with visual studio but nothing seems to be working. No matter what I do even with simple programs, like Hello World, I'm always getting an error about a .pch header file.fatal error C1083: Cannot open precompiled header file: 'DebugConsoleApplication1.pch': No such file or directory
This is only for one of the programs I've made but I'm pretty new to programming and I've not even used the header files for anything so I have no clue how to resolve this problem.
I've written a c++ program that contains the following classes: class Shape, Circle, Ellipse, Rectangle, Triangle. All the classes are a subclass of class Shape. They syntax of their definition is fine, I see no visible errors. This is the code:
#include "graphics.h" //#include <iostream> using namespace std; const float Pi = 3.141;
float distance (int x1, int y1, int x2, int y2) {
[Code] ....
Now when I declare a variable of each subclass in the main, I get an error on two of the classes.
int main () { Circle a; Rectangle b; Ellipse d; Triangle c; int x1, y1; float length;
[Code] .....
...And there's a bunch of similar if conditions. My compiler gives an error under b and d, i.e. the Rectangle object and the Ellipse object. The error is, "Expected a ';'" . I have quadruple checked every inch of my code and as far as I can tell, there are no missing semicolons. Where this ";" belongs ....
Basically, I'm moving a VC project from my Windows 7 build machine to a new build machine that's running Windows 8.1. One of the pre-build steps (for a particular project) runs a script which needs to call the M4 macro processor (which is installed on my C: drive). I've been pretty careful to set everything up the same on both machines (including my PATH) but when I try to build the project on my Windows 8 box, MSVC's IDE shows me this error output when running the script:-
Ok, this thing works as far as the getting the image and drawing the rectangle but for the life of me I cannot figure out why it is causing an in the program.cs.
public partial class Crop : Form { public Crop(Image BaseImage) { InitializeComponent(); if ((Bitmap)BaseImage != null) { pbOriginal.Image = BaseImage; }
[Code] ....
BaseImage is pulled in from the main form's picture box.
I wrote a program with a recursive() called finder. But it dose not work properly,at run time it becomes to a infinite status. How to detect the error at runtime. Here is the code.
#include<stdio.h> void finder(int x,int y); int tot;
[Code] ....
I think the error is the changing value of x after a round of for loop.
