51,592 Topics
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 | So I'm working on this OpenGL 3D Graph program, and like, I ran into some trouble, since I wanted it to support fullscreen, so I made the following; [CODE] int main(int argc, char *argv[]) { ... // Some stuff glutSpecialFunc(SpecKey); ... // More stuff } [/CODE] Which is calling the … |
| | I cant figure out how to make a function that correctly solves the max height of a parabola I know height = distance * tan(angle) - (gravity * distance^2) /2 *( speed * cos(angle))^2 I try to put this in and I get like 1.2 trillion I think im doing … |
| | The screen clean very fast cant see it move... how can make it looks btr? [CODE] int i,j,k,a; char logo[9][59]; for(a=0;a<59;a++) { logo[0][a]=262; logo[8][a]=262;} for(a=0;a<59;a++) { logo[1][a]=' '; logo[7][a]=' ';} strcpy(logo[2]," @@@@@ @ @@@@ @@@@ @@@@ @@@@ @@@@@ @@@@@ @ @ "); strcpy(logo[3]," @ @ @ @ @ @ @ … |
| | hey frnds here...... i need some help..... i need a project in database or networking...... in c++/.net/java please help.....any effort will be highly obliged..... |
 | Hi, there are several threads on this issue, but none seem to give me a good answer. My current code is this (This program plots points on a graph) : [CODE] //Put line equasion into arrays. #include <iostream> using namespace std; double getData(int counter, double m, double b) { int …  |
| | Hi, I have a simple question on trying to set shared ptr to NULL. I get an error(binary '=': no operator found which takes a right hand operand of type 'int') when I do this... [code] typedef std::tr1::shared_ptr<A> A_smrt; A_smrt = NULL; [/code] Why is this wrong? |
| | This program is suppose to display MPG's (total), and the combined MPG of all the total MPG's you input. [code] // Exercise 4. 12: ex04_12.cpp #include <iostream> using namespace std; int main() { double mpg; double gallons; double combinedMpg = 1; double total; while ( mpg != -1 ) { … |
| | this is what I made for a = operator: [code] matrix matrix::operator= (double a[]) { for (int i = 0; i < rows * clms; i++){ //std::cout << i<< "=" <<a[i] << " "; *(x +i) = a[i]; //std::cout << i<< "=" <<x[i] << " "; } return *this; } … |
| | In the following very simple program, if the input is [I]not [/I]an integer (e.g. a character symbol), then the output screen would flash and go away. Is there a way to have the output "bad" when one enters a non-integer, just as when one enters a negative number? Thanks in … |
| | hey guys, ok here's the situation. i need to turn a C++ style string into an integer now i've used altoi and strtol but they give me different numbers. heres my code [CODE] cout << file << endl << file.c_str() << endl; // debugging purposes num = strtol(file.c_str(), &pEnd, 10); … |
| | I am using Visual C++ Express Edition. I have 3 files: (A) main.cpp, (B) prototypes.h (C) implementation.cpp. main.cpp includes prototypes.h and prototypes.h includes implementation.cpp. When I go to "Start without debugging" things screw up because in (C) implementation.cpp the compiler complains that it can't find the data fields. e.g. it's …  |
| | [code=c++]#include<iostream.h> #include<conio.h> void main() { int x[5]={1,2,3,4,5},y[5]={5,4,3,2,1},result [5]={0,0,0,0,0}; int i=0; while(i++ <5) result[i]=x[i]-y[i]; clrscr(); cout<<"\nThe contents of the array are :\n"; i=0; do { cout<<'\t'<<x[i]<<'\t'<<y[i]<<'\t'<<result [i]<<"\n"; i++; }while(i<5); getch(); }[/code] OUTPUT: The contents of the array are: 1 -1 0 2 4 -2 3 3 0 4 2 2 5 … |
| | my assignment is to make a triangel like so: * ** *** **** ***** I have done so but cannot get my command window to stay open. It pops up and closes right back out. heres my code can anyone help? #include <iostream> int drawBar(int); int main() { std::cout << … |
| | Okay, what I'm trying to do here is set up a some-what simple battle system for a text based game... I'm having some trouble getting it to work correctly though. I want the Player's attack and the Monster's defense to be random each time the program loops (which is also … |
 | Hello, I am trying to make an rpg, and I am having troubles with functions. I am currently working on the 'potion' aspect of my rpg, which I have highlighted in red. My question is this: Is it possible to make the function return money, potion number, potion size, etc? … |
| | I'm trying to make a program that will read two txt files, with GPA information (one for females and one for males) arranged like this: M 4.0 M 3.7 M 2.9 I've been instructed to used pass by reference void functions with no global variables. My major issue is how … |
| | My system has a service (Serv.exe) which starts as LocalSystem and should be running at all time, additionally on startup of the PC (auto logon) the user has a STARTUP application (App.exe) which runs. Sadly I've found that sometimes App.exe starts to run before Serv.exe has finished starting, and one … |
| | So i am just starting out learning C ++ and i was trying to make a BMI calculator. When ever i run the program and it prints the BMI number its a weird number. Not one it should get. Please can u help me out with my source? #include <iostream> …  |
| | Hello I am new to this forum so be patient.. I am currently having an issue with a map iterator well the code i am talking about: [CODE] leafnode<LeafEntry<recno_t> ,blocknum,char*,recno_t>* descend(Object<dimensionality,Type>& ob,nonleafnode<NonLeafEntry<dimensionality,Type>,dimensionality,Type>* rt,blocknum* leafblocknum){ std::map< int,NonLeafEntry<dimensionality,Type>* >* entries; std::map< int,NonLeafEntry<dimensionality,Type>* >::iterator it; leafnode<LeafEntry<recno_t> ,blocknum,char*,recno_t>* L; int i,elements; if(rt == NULL) … |
| | hello, I am interested in implementing the push relabel max flow algorithm in C++. I see an implementation at [url]http://www.boost.org/doc/libs/1_40_0/libs/graph/doc/push_relabel_max_flow.html[/url] and don;t understand a good bit of it. I am in a position to describe my graph and if someone could explain how I can use this piece of code, … |
| | I am trying to overload the Comparison Operators, to have them compare the RMR of two fitness trackers. I need to change the RMR from a double to an int for the comparison. How would I do this when the RMR is calculated by a function. Here is my code. … |
| | I have a string which i can break down into tokens but what i want it to do is if it reaches a '//' it breaks out of the loop so no more tokens are added I have tried using this but it doesn't work [CODE]while (p!=NULL) { if(p=="//") { … |
| | How can i sort this array pls.. [CODE]#include<iostream> #include<algorithm> using namespace std; int prompt(int x[]); void printreverse(int x[]); int main() { int x[5]; prompt(x); printreverse(x); system("pause"); return 0; } int prompt(int x[]) { for(int i=0;i<5;i++) { cout <<"Enter integers:"; cin >>x[i]; } } void printreverse(int x[]) { for(int i=0;i<5;i++) { … |
| | So i am writing a simple prgm in which you enter the values of 2 matrices and multiplies them. [code] #include<iostream> #include<iomanip> #include<cmath> using namespace std; int main() { int i, j , k , l, m , n , o, p; cout<<"Enter The Rows And Cloumns And Of The … |
| | Can someone help me with this problem I've been trying to do an else statement but it doesn't work here is the code.... for(int c=0;c<student_max;c++){ if(search_id==id[c]){ location=binary_search(id,student_max,search_id); cout<<"Student ID \tTotal \tGrade"<<endl; cout<<"-----------------------------"<<endl; cout<<search_id<<" \t\t"<<total[location]<<" \t"<<determine_grade(total[location])<<endl; //break; } //} else{ cout<<"Incorrect id entered"<<endl; break; } } } |
| | my assignment says to "Finish the header block on the function. " What is the header block? Is it the // (write information) or is it something else?  |
| | I need to create a triangle in C++ that will take the user inputted letter (capital) and then create a triangle that will look like. I can only use nested loops NO arrays or strings Enter a letter: F F FE FED FEDC FEDCB FEDCBA here is the code i … |
| | I'm trying to write a c++ program that first asks how may people are in a party, then it takes that number to calculate how many times to ask what the next person wants to order. This is what I have so far. I can get the program to recognize … |
| | Hi All, I am trying to write a small program to better understand and practise writing blocks of code, I have written the one below but get the error message : "Linker Error undefined reference to WinMain@16 ld returned 1 exit status" // This program demonstrates a block of code … |
| | Hi everyone, Well I come to a point that I have run out of ideas and time and I’m going to ask for help from anyone that can help. I hope that there will be someone that could give me a hint how to solve my problem. About my problem … |
| | May somebody pliz help explain to me line by line of this c++ coding cause I can't seem to understand it:- #include <stdio.h> #include <stdlib.h> #define SIZE 50 #define pi 3.14 void push(int i); int pop(void); void sort(int stack[SIZE],int numbers); int *pointer, stack[SIZE],numbers; void main(void) { int value,numbers,num,num2,num3,num4,array[5],num6,num7,num8; float num5,num9; …  |
| | Hello, I have to write a program that merges 2 seperate files and then outputs to a single file. Each input file is to have numbers in ascending order and the output is supposed to compare these and then put them in ascending order. ex.: input1 = 1 3 5 … |
| | I have the following struct [CODE]struct A { int a, *b, *c, *d; };[/CODE] I would be creating an array of A and then populating the member variable for each of struct in the array. The members b,c,d are allocated dynamically based on the value of A.a. To assign the … |
| | Hi guys, Sorry to ask a question as my first post. I'm totally new with c++ and I couldn't understand much about vectors. [CODE] case 1: { cout<<"Enter [S]avings Account , [C]hecking Account,[G]eneral Account"<<endl; cin>>selection; if ((selection == 'G') || (selection == 'g')) { acc.push_back(newAccount); cout<<"New account added"<<flush<<endl; break; }//end … |
 | Hi. I have a problem I cant find a solution to, since I am unable to describe the problem in a searchable way. I make a hWnd for each contact the user has: [CODE=C++]contact[atoi(rowC[0])].hWnd = CreateDialog(GetModuleHandle(NULL), MAKEINTRESOURCE(IDD_DIALOG4), hWnd, messengerBox);[/CODE] messengerBox is defined like this. [CODE=C++]BOOL CALLBACK messengerBox(HWND hWnd, UINT message, … |
| | [CODE]double distance (double angle, int mps, double earth_gravity) { double earth_distance; double speed_sqr = mps * mps; earth_distance = speed_sqr * sin(2*angle) / earth_gravity; return earth_distance; }[/CODE] its supposed to come out at = 3831.57 intead it ends up being =3155.52 anyone know what im doing wrong? |
| | Hi All, I have just started learning how to write C++, I have written my very first very simple program using notepad and saved the file as simple.cpp. So my question is how do I compile or build my program into an executable file, I understand I have to use … |
| | Hi All, I am currently learning C++ and i have started to write some small programs that explain operators, integers and values, my question is this. How do I make my programs stay on screen, at the moment I run my program it displays the message on screen for about … |
| | I have been told to write a c or c++ program for TCP server client program with some conditions that is listed below: You are to implement a synchronization server managing barriers. Your synchronization server should be a stand-alone single threaded process that continuously awaits requests from other processes (the … |
| | im newbies in c++... my task is to translate code Morse into alphabet an count the word i use... the problem is i dont know how to use the ifstream to read and use the code Morse that must be kept in .text file i only manage to write the … |
| | Hi all. Before you all scream "search the forum", i already have, this and many others. cant seem to find the problem with my code. Basically, i have a fairly large text file, each line consisting of 20 fields seperated by a `. i have got my program to split … |
| | I would like to automatically generated staff number before generated the staff number i would like to check the staff.txt is the staff number exist. If exist then it will get the last's staff number and continue to adding. But the code that i creating it wont work. Please help … |
| | [code]#include<stdio.h> #include<conio.h> main() { int a,i,fact=1; clrscr(); printf("Enter a number "); scanf("%d",&a); for(i=1;i<=a;i++) { fact=fact*i; } printf("Fact of %d is %d",fact,a); getch(); }[/code] |
| | Hi, I tried to direct the output from a thread into a log file using fstream, but it dosent seem to work. If I use ostream then it works fine. Can you please let me know why fstream is not working. Thanks in advance |
| | Here's the code: [CODE]#include<iostream.h> int test(); int main() { cout<<test(); return 0; } int test() { int a=1; a==1? return 1: return 0; }[/CODE] Could anyone please help me by telling me why VC++ 6.0 rejects this piece of programming code? Is the line" a==1? return 1: return 0;" grammatically … |
| | please help me what all things should be included in convertor in turbo c++ |
| | As I was told, recursion is a good way to make things simple in terms of writing programming code, but the outcome usually involves extra overheads. I was also told that for some recursion algorithms it is possible to adapt them to make corresponding nonrecursion ones. I wonder if there's … |
| | If so, how do I do it? I need to use it for a project. |
| | [CODE]#include <iostream> using namespace std; int main() { //delcare varialbe char selection; //declare function void counting_loop(); void impossible(); void missing_item(); void odd_even(); void poem(); void pause_m(void); do { cout << " Welcome to the Fun Program" << endl; cout << " Select from the menu " << endl ; cout … |
 | i'm trying to determine the age of the people by entering their id card number..i'm trying to do this without having the database.. is this code possible??because i got error when try to run it.. if this possible,could you tell me the correct way to do this? Thanks... [CODE] #include … |
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