Okay, so I think I have just passed the intermediate line in my skill of c++ and my question is how do I make a program that opens unknown files extensions. for example like .plr. Because I see a bunch of files for game modifications like that, that was a good reason I started c++ too.
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The below program is supposed to display the contents of all files listed in the command line. When I try to run the program I get the fatal error "Debug Assertion Failed" Expression: file != NULL. I've done some researching on the matter and I gather it might be because I don't have any files listed in the command line?
How to enter files in the command line! I opened the Command Window in Windows XP and tried typing in "C> argc" and "% argc" (argc being the name of the file containing the below program) without any luck.
Code:
#include <stdio.h>
#include <stdlib.h>
int main (int argc, char * argv[]) {
int ch; // int to hold EOF
int count;
FILE *fp;
for(count = 1; count <= argc; count++) // agrc loop
[Code]...
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;
[Code]...
I have an application that Opens files with different extensions for viewing purposes only. I use MFC with Multi-Document template.
When I go to Windows Explorer in Windows 7 and right-click on Libraries - Documents, and scroll down to New, Explorer shows multiple links for creating new files with these different extensions.
My application does not create New documents. It just opens them for viewing purposes. In fact, I have disabled the New portion of the mainframe window.
My code includes:
EnableShellOpen();
RegisterShellFileTypes(TRUE);
I am at a loss as to what portion of my code would have placed these links into Windows Explorer!
Is there any way to prevent them from being created in the first place?
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?
View 4 Replies View RelatedI 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.
View 4 Replies View RelatedI want my program to be able to read text files in the format:
number number
number number
number number...
and so on, so there are two columns of values. The problem I'm having is, there are a lot of numbers in the file, and it can vary. The program needs to read the numbers, put one column into one array, and the other in another, perform some operations on it all, and eventually pop out two different arrays. In other words, after I've got these arrays, I don't need them for much longer. I was hoping I could dynamically allocated some arrays to store the numbers and just free them as soon as I'm done with them.
If the file wasn't of such variable size or if it was guaranteed to be under a certain number of variables, I would have used:
Code:
while ( fscanf(input, "%lf %lf
", &col_1[], &col_2[]) == 2 )
{
no_rows++;
}
The problem is I want to allocate "no_rows" as the array size, which I don't have until after I have read the file.
I want to make a custom program for packaging multiple files in one. Not as complicated as ZLIB or others. Consider few files, XML, txt, JPG, OGG, I want them to be added in 1 file. Not visible not readable. Just a datafile. I have some ideas about creating some kind of indexing of the start byte, end byte of each file. But I am still way too far. Can you point me some direction at what should I stress in creating this software. It will be portable since I am planning to use stdlib, stdio only, maybe and string to recreate the filenames from the large chunk datafile.
View 2 Replies View RelatedI need to write a c program that opens a file in note pad. The first line is the number 5, for how many rows of binary strings are to follow. Each line contains a string representing a binary number (with a maximum of 32 binary digits) The program is supposed to read this file, and convert each binary number to base 10.
This is the binary code to test:
5
0110010101010100100101
10110
10000
[Code]....
I've been searching for a long time to find a way to make a cpp program that opens google chrome and goes to a specified url and nothing is working. This is the current code i'm using but its not working because no one really specifies the includes & dlls necessary for execution or if they do they compile with errors....
This is the basic code i've been using. Apparently, ShellExecute is the preferred method to do it. Its not really turning out to be my favorite right now...
int main(){
ShellExecute(NULL, "open", "
I want to incorporate a button into my current program that opens up a calculator in a different window. I have the code for the calculator and the program. I have never worked with buttons or windows.
View 4 Replies View RelatedSo I'm making setTimeout and setInterval functions.
I have this remember function (that is part of Timing class) which takes a function pointer and a void pointer, which are remembered in that object.
Another (timing) function of that object is called in every loop of the program and when specific time passes that function calls the remembered function whit the remembered void pointer as argument.
The problem is that the functions that need to be called require unknown multiple parameters, so what I need to do is make a new class that will store the needed arguments. I make the function that needs to be called and that storage object and pass pointers to them to my remember function, when the remembered function is called it stores the data from storage object in new variables and dose it's thing.
Question is : Write a program that opens a file and counts the whitespace-separated words in that file.?
my answer is :
#include <iostream>
using namespace std;
#include <iostream>
#include <string>
#include <fstream>
int main() {
string filename = "Question 1.cpp"; // File name goes in here
[Code] ....
Now I am not sure if im suppose to get a msg saying : The file "Question 1.cpp" has 0 words.
im wondering is the question that im being asked, asking me to input a string of words and then the compiler when it builds and runs the program counts the word spaces.?
#include <iostream.h>
#include <conio.h>
#include <stdlib.h>
float CalcPriceMember1(int,float&,int&);
float CalcPriceMember2(int,float&,int&);
float CalcPriceNonMember1(int,float&,int&);
float CalcPriceNonMember2(int,float&,int&);
[code].....
how to use SDL just today, installed the standard SDL library on the compiler. But when i got to the point where I needed to install the SDL image extension library I thought I had everything correct but when I tried running a program using it I got errors. The non-extension SDL apps work just fine but when I try using SDL_image functions in my code I get problems, although when I begin typing the function the name shows up and i do not get issues with the .h, I feel its a link issue because I get errors such as:
ld.exe||cannot find -lSDL_image|
ld.exe||cannot find -lSDL_image|
||=== Build finished: 2 errors, 0 warnings (0 minutes, 0 seconds) ===|
I'm confident I have my /includes installed correctly. Also I was unable to find the 1.2 version for the Img extension so i reluctantly went ahead with 2.0 if that is perhaps causing issues.
I'm trying to create a program that allows the user to enter an unknown number of income and expense amounts. The program has to us see a while loop and display the income total, expense total, and total profit or loss. I've got it really close, but I'm doing the loop wrong. It counts the sentinel value (-1) towards the total, instead of just ending like it is supposed to.
#include <iostream>
using namespace std;
int main() {
//declare variables
double incomeInput;
double expenseInput;
double incomeTotal=0;
double expenseTotal=0;
[code]....
I'm having with header files, specifically to do with the string data type. The objects work perfectly when I put them inside the .cpp but when I set it to include the exact same code in a .h, I get a string of error messages.
class Topic
{
private:
string NInfo, SInfo, EInfo, WInfo, Name ;
bool Quest ;
[code]....
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 to structure my classes so that they all "wire together" and inherit the proper functions and data that I want them to. I want to have a Car.c and car.h which are "wired" with body.c/body.h, which in turn is wired with a frame.c/frame.h, wheel.c/wheel.h, and driver.c/driver.h.
Each part of the car holds some type of data, mostly ints: The car has a (total) mass and car_name. The body has a mass and color. The frame has a mass. The wheel(s) have a mass and force. [There will be 4 instances of wheel] The driver has a mass and driver_name. Each of these functionalities must come from their respective .c and .h files, and be amalgamated in the car.c and car.h (which should contain all the functionality of its parts). Then, in my main test program, I am to make an instance of car and hardcode in its values of: mass (which comes from the total mass of all of its parts, this is where i start to lose it.
How will I access its parts' masses in the test program?), color (a character array), current position (an integer), current velocity (an integer), and current acceleration (which comes from the total newton force of the 4 wheels, again this is where I start to get very confused). (Then in the test program I am to print out a simulation of this car over a period of 100 seconds, and show its position, velocity, and acceleration at each point (based on the mass, total newton force, and starting position). This part is of course a simple while loop, and is somewhat trivial.)
From what I understand, I will need to allocate memory for all of the data each class holds. Then, using function pointers, as well as #include "X.h" , I will need to somehow link up all of the classes together so that car has access to all of the parts' functions which set, for example, the newton force of each wheel.
We have learned a slight bit about structs, malloc, sizeof, and pointers, but I have not used them to link functionality or data from separate classes together.
Is there a way to get the URL when the user opens a web page with a common web browser?
View 3 Replies View RelatedIf I compile code which uses cin using the command prompt, then run the compiled program a new window opens when it reaches the cin line of code, for the input. If there is no cin used then all printing happens in the original window. Is there a way to stop this behavior of the opening of a new window?
View 1 Replies View RelatedI am doing a c project .it is a system that stores the name of txt format reports made by students and opens them.
View 1 Replies View RelatedIf the filename below is a directory, then the following loop goes to infinite.
std::ifstream in;
in.open(filename, std::ifstream::in);
if(in.fail()) return;
[Code].....
I have a COM Object created using ATL (without MFC Support)
The Object has 1 method that opens a Dialog (that does all the rest) and when finish - returns 2 values back (1 is enough)
Currently I call it from another EXE:
hr = CoCreateInstance(
CLSID_MyControl,
NULL,
CLSCTX_INPROC_SERVER,
IID_IMyControl,
(void**) &pMyControl
);
and then:
hr = pMyControl->MyMethod (ATL::CComBSTR(InputString1), ATL::CComBSTR(InputString2), &IntReturned, &IntReturned);
Is it possible to call it as is from a browser ?
How can I Instantiate the object and invoke my method (with params) from the browser ?
will it open the dialog ?
I would like to know how can I make a simple program .exe so that I don't have to open it through code blocks every time.
View 2 Replies View RelatedI'm trying to write a program for a lab, I know how easy it is but cant see to crack it.
I need to make a program using while or for loop.
I must have the user type a number, for an input value an output value but then do it again several times but without it going on forever asking again and again.
