51,593 Topics
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 | An example how to plot the function y = sin(x) using the WinApi function SetPixel(). The plot is centered along a line at pixel y = 200. Add an x-axis and a couple of tickmarks and it could look impressive. |
| | #include<iostream> #include<fstream> #include<ctime> #include<cmath> using namespace std; clock_t start, end; double cpu_time_used; int main() { int m,i,j,n,k; double P[150][150], tou1, cx[8],cy[8], U[150][150],V[150][150]; double u,x[150],y[150],dt=1.0, T[150][150],S[150][150],t=0.0; cout<<"enter the units in X x Y"<<endl; cin>>m>>n; class pdf { public: float feq[150][150], f[150][150]; }; pdf f0, f1,f2,f3,f4,f5,f6,f7,f8; // For X for (i=0;i<=m;i++) { … |
| | Okay, so I've gotten my second project in C++ and this seems pretty extream for a second project to me, but I'm determined to get this working. so my teacher suplied two header files (set.h and bingoball.h) our job is to take those files and program a bingoball.cpp and a … |
| | Hello, i just made this program to push the '5' button repeatedly when I hold the 'f12' button and this works just fine but i have a question! When I run this program while I'm playing super mario bros this program does not work! I use the 5 button to …  |
 | so, we have this school assignement in which we are asked to make a program that would ask you to enter two integers, them the program should add the two integers and all the even integers between them. example: integer1: 1 integer2: 10 (1 + 10 + 2 + 4 … |
| | am new student to c++ and am taking this course , I faced a little problem solving my assignment question .. this is the question..... to write a program that reads in 5 whole numbers and outputsw the sum of all the numbers greater than zero , the sum of …  |
| | Everything is coming out except for the average, what am I doing wrong? #include <iostream> #include <string> #include <iomanip> using namespace std; int main() { string ssnumber; int exam1 = 0, exam2 = 0, exam3 = 0, final = 0,count = 0, sum = 0; int average1 = 0, average2 … |
| | Dear friends: I compile my procedure with mpicc, it can give correct execute file. mpicc -o testprint testprint.c libptools_ppf.a But when i compile it with mpic++, it gives me some error about undefined reference. Could you please help me out. mpic++ -o testprint testprint.c libptools_ppf.a testprint.c:25:31: warning: deprecated conversion from …  |
| | CSCI-15 Assignment #2, String processing. (60 points) Due 9/23/13 You MAY NOT use C++ string objects for anything in this program. Write a C++ program that reads lines of text from a file using the ifstream getline() method, tokenizes the lines into words ("tokens") using strtok(), and keeps statistics on …  |
| | Hi, Imagine a vector of structures with each structure containing various variables. struct Data { double x double y double z } vector<Data> Dataset vector<Data>::iterator it //input some data from a file into DataSet How can I iterate over this vector, comparing say, x at the nth row to the … |
| | I need to know how to remove spaces from a string using pointers in C++. Since I'm in senior year in school I'n not used to quite complex programming. I tried doing this program but I think I'm totally hopelessly terrible wth pointers (I was out sick, the day my …  |
| | Im completely new to programming, and this is my problem. For example, if a train travels 40 miles per hour for three hours, the distance trav-eled is 120 miles. Design a program that asks the user for the speed of a vehicle ( in miles per hour) and how many … |
| | Hello! So recently I have written a lexer/tokenizer and am working on a parser for a language with a friend. At this point everything is going great but I'm beginning to think about how I want to do code generation. Are there languages or systems that generate for example C …  |
 | HI I am trying to make a dll file that performs its tasks using CUDA library. Here is a simple version of my code: CUDADll.cu ` #include <iostream> #include "cuda.h" #include "cuda_runtime.h" #include "device_launch_parameters.h" __global__ void test(int a, int b, int* c) { *c = a+b; } extern "C" __declspec(dllexport) … |
| | Hello! I am having a bit of a hard time figure out how to code this thing.. I have just started coding by using windows form application and need some help.. I have successfully coded so that I can open a txt file without any problem, but it is reading … |
 | Hi, I am trying to call the borland C++ DLL from VS 2005 .But its giving Linking Error. Tried teh below one still its not working , Extract the DEF file from DLL converted the DEF to LIB file. Any one have any idea ? Thanks, Angelin |
| | So I'm trying to validate dates and I have this else if "bool" that always returns false. I've written this at least 10 times and can't get it to work. When I comment everything out and only try one if at a time they all work. I know it's semantics, … |
 | Hi. how do you make a registration system using turbo C++? like for example: when i run the program i will register my username and password and my information(user and pass) will be saved. So that when i log in. i will just input my user and pass, and i …  |
| | > I want to create a program that will calculate the day easter will be on. The user will type in a year and then the program should calculate the day easter will be on. I'm having trouble understanding the if/else and how i can use that with the code … |
| | i really need your help and really fast. i've been working on this project where i am supposed to create a simulation of conway's game of life. A cell can only be in one of two states: alive or dead. There are two kinds of cells: ConwayCells and FredkinCells. Live … |
 | Hey Guys! I have to read data from a text file, load it into an array and then bubble sort it! Here is my code: #include <iostream> #include <string> #include <fstream> using namespace std; void Bubble_Sort(string arr[], int length); int main() { int length; length=10,000; ifstream MyFile; ofstream out; string … |
| | Hey guys, this is my solution to a simple problem and I was looking for some feedback on my code. Please post any criticism you may have about it. //Test project for string to binary conversion// #include <iostream> #include <string> using namespace std; void binConvert(string ConvertMe){ int ArraySize = ConvertMe.length(); …  |
| | Factorials get large very rapidly. The factorial of 13 is !13 = 1*2*3*4*5*6*7*8*9*10*11*12*13 = 6227020800. This number already exceeds the unsigned long integer, and gets into the real money as the politicians say! This program uses an array of characters to store the factorial as a numeric string. Go ahead, … |
| | i am getting result of average in int instead of float, tell me where i have made mistake. this is the code. #include<iostream> using namespace std; void getData (int a[], int s); int numbersSum (int a[], int s); float average (int sum, int size); int main() { int size=0; int … |
| | Dear All, I'm working on application in C# which needs to filter "blanks" in one column and copy some value from other column instead. Filtering works perfectly, but copying is not so cool.. It copies some lines, but rest left blank. I cant find out where is problem. If possible … |
| | Hello, I'm currently trying to figure out how I could go about taking a getline putting the one line into an array and then putting the first value aka array[o] into a command variable and then all the next values on the line into seperate variables of integer for key … |
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| | how to test if a num is a square root? ex: 9 is square root 3 is not square root ///////////////////////////////////////////// //do not worry about sytax. int x = 0; //always start at 0 int y = 101010; //is this a square root? square(x, y){ if((x*x) >= y){ //not a …  |
| | C# SelectCommand.Connection property has not been initialized mean? thankyou! |
| | I am doing a school project which is an airplane collision detection system. Can anyone show me a few examples or pseudocode of implementation of closest pair algorithm O(n^2), O(n log^2 n), O(n log n)?  |
 | if(company[i][j] < 0) { loss = loss++; } else //Im trying to Get the number of losses and not the actual input numbers"for example loike 1 loss, 2 loss etc |
| | Hi I got an assignment from my instructor with this exact instruction: "Your main function should call the function int getUserOption() *to display the option menu to the user*. The function should **return an int value** indicating the option selected by the user, and the main function should use this …  |
| | I need help with this two questions, its not hard for experts I guess, here it is: Determine the time of executing the following algorithm fragment: a) if (x == 0) then for i = 1 to n do a[i] = i; b) i = 1; repeat a[i] = b[i] … |
 | **Ok the problem is this. I have the groups I want added to the administrator, and remote desktop users group on the local machine, and all that works fine. If you hit windowsKey+pause , or right click on "My Computer" and go to advanced settings, remote tab. At the top … |
 | hello everyone! i have a quiz about 2D Arrays. and i don't know how the questions might be, can you help me :) thank you. PS:please correct my grammar mistakes if you see any, i'm here to learn. thank you |
| | Hey everyone. I am working on learning how to make some different controls with win32 and at the moment I amt trying to make a combobox with small images next to each option. However when I run my code the options are there but the images are missing. Can anyone … |
| | Hey guys, I've been working on a little project of mine, and part of it requires sorting. I'm using bubble sort and before I put the algorithm in the code, the program ran fine. void ranking(){ int count = getcount("all"); // get total members and save value to count int* … |
| | 1. #include<stdio.h> #include<conio.h> int main() int a=10; printf("%d%d%d",a,a++,++a); getch(); return 0; } o/p:12 11 11 #include<stdio.h> #include<conio.h> int main() { double a=5.2; if(a==5.2) printf("equal"); else if(a<5.2) printf("less"); else printf("high"); getch(); } o/p: less Can any one give me explanation for the above outputs..... |
| | I am trying to create a simple transparent window where I can draw with Direct2D. So far what I have done: 1. Created window 2. Set style to **WS_EX_LAYERED** 3. Set alpha color key as #FFF 4. Draw using Windows Graphics a white rectangle 5. Now window is transparent with … |
 | Please help me to perform this code! I'm beginner and want to know how it's look like! thank you To create abstract data type (structure) - vector that comprises a pointer to the target and the number of elements. To define initialization functions, the removal of a vector, set / … |
| | I'm a bit lost. I am trying to take an input file and use the data inside as a command as well as the data. So my input file would look like this: *B 127.2 Hi 183.2 Someone 23.8 Lost* Where "B" would call the specific function it is attached … |
 | Hey guys! I wan't to write a facial recognition software in C++ My platform is on a MAC. Please Suggest some good examples Thank you.. |
| | Ok, so, I've been scrounging around the internet looking for a decent C++ Keylogger that is able to be hidden (Not showing a console window) and have been very unsuccessful, I need help building one or finding one that works PROPERLY. I use Codeblocks compiler, similar to Dev-Cpp. Any help … |
| | CSCI-15 Assignment #2, String processing. (60 points) Due 9/23/13 You MAY NOT use C++ string objects for anything in this program. Write a C++ program that reads lines of text from a file using the ifstream getline() method, tokenizes the lines into words ("tokens") using strtok(), and keeps statistics on …  |
| | for those people who are good in making a visual studio C++ program.. I need some help for my project about creating a program that will convert dollar value into peso and vice versa. |
| | Hi I need help to draw a circle using c++. I have never used any programming before and have to do computer science to become a Maths Teacher. My first task is to write a program to draw a circle with the user inputing two x,y coordinates and the centre … |
 | hi everyone! I want to get the output of my c++ application from my jaca applacations o i use a file abs.bat to get it done i used this code in .bat: start readxmlresou.exe that commande line opens readxmlresou.exe that is in my desktop and execute it, now i want … |
| | In the two for loops below, I want the checksum variable to hold the same value for both even though one loop starts at row 12 and another at row 0. Any ideas how I can combine these loops so that I don't have to iterate the same buffer twice? … |
| | #include "stdafx.h" #include<iostream> #include<conio.h> #include<ctime> using namespace std; int *p[10][20];// int _tmain(int argc, _TCHAR* argv[]) { cout<<sizeof(*p)<<endl; getch(); return 0; } output: 80 but i cannot understand how it work. |
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