49,766 Topics
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| | Hi, im new here, and i want to ask about "how to make a compiler". I'm a Computer Science and part of my subject wants me to create a compiler, and I had no idea of how to create one. Can anyone help me..... |
| | It seems like when invoking a function explicitly, it should be compiled at compile-time with a specific variable type, but I am not sure how implicit function invokation works. I don`t think compiler will create a different function for evey datatype available (since there can be many different data-types in … |
| | Hello, basically I'm trying to write a program where you ask the user to input 2 positive number. Then the program will print the lower of the two numbers to the higher of the 2 numbers and then higher of the 2 numbers to the lower of the 2 numbers. … |
| | I have to do a 4 function calculator for class with the do...while loop. With the option of ending the program after the while by either entering 'y' or 'n'. However the program automatically loops without seeking input to restart or not. [CODE]/* This is a four function calculator with …  |
| | So I'm making a simple calculator program on the Windows Form Application of C++. Nevertheless, I'm stuck on the exponents, factorial, and square root part. In my System32 Console calculator, these were the codes I use for the exponent, factorial, and respectively, while I just used the sqrt function of … |
| | Hello, basically I'm trying to write a program where you ask the user to input 2 positive number. Then the program will print the lower of the two numbers to the higher of the 2 numbers and then higher of the 2 numbers to the lower of the 2 numbers. …  |
| | I'm currently getting a fatal error LNK1120: 1 resolved externals. Can somebody help me figure out what is going on? #include <iostream> #include <iomanip> #include <fstream> using namespace std; const int MAXCHAR = 101; const int CAP = 100; struct Cart { char itemName[MAXCHAR]; char itemPrice[MAXCHAR]; char itemTotal[MAXCHAR]; }; void … |
| | Hi, I recently started learning C++ and have decided to install it onto my computer to try writing some codes. So I chose Code Block as my IDE since it is free. I know, since I use Windows 7, you will probably recommend Visual C++. But I want to stick … |
| | Alright, so what I would like to see happen is two strings attached. I know I can cout << them both and they will output an attached string, but what if i want to call the attached string in another area of my code? [CODE] #include <iostream> #include <string> using … |
| | [CODE]#include "assign3.h" #include <iostream> using namespace std; Calculator::Calculator(int size) { if (size > 0) { mSize = size; mPstack = mPtop; if ((*mPstack).im && (*mPstack).re) { mSize = size; mPstack = mPtop; } else { mSize = 0; (*mPstack).re = 0; (*mPstack).im = 0; } } else { mSize = … |
| | I want it so that i can enter multiple things upon input. Here's my code: [CODE] #include <iostream> #include <string> using namespace std; int main() { char dot; dot = '.'; string sztext1; string sztext2; cin >> sztext1 >> dot >> sztext2; cout << "Works..." << endl; system("pause >nul"); return … |
| | Hello im a student and this is homework so i just need help, thank you. My problem is with this fibonacci sequence, we need to write a recursive function that returns void. I think i pretty much understand recursion. Please help. I initialized result=1 in the main function. For i, … |
| | I'm trying to code something that's a little complex, imo. It's a C++ program that will count the number of operations of recursive functions and will compare it with O(g(n)). This count value will basically estimate time complexity function T(n). You have to find the g(n) to get O(g(n)) that … |
| | Greetings, I have a C++ program in which I am trying to print to a file, but using the following commands it isn't working. "payrecord.txt" is created, but blank. I suspect it has to do with my choice of making the displayResults function a "void", but I am not certain. … |
| | Hello, I am working on a binary search tree program. In main, line 21, I am invoking the Binary_tree insert function. I get a compiler error on line 178 of the Binary_tree file. The error says "error: cannot convert 'const int*' to 'Binary_node<int>*' in assignment. They both seem like ints … |
| | Hello my problem is : I have an interface [CODE] class IAnexable { public: virtual IAnexable* anexar( char c ) const=0 ; virtual IAnexable* anexar( SecuenciaCaracter* sc ) const=0; virtual IAnexable* anexar( SecuenciaCaracter* sc, int inicio, int fin ) const=0; }; [/CODE] from which it inherits the following abstract class … |
| | Another problem is my program draw lines not Polygon but I want to show POLYGON.HElP ME ASAP.Check my txt file attachement [CODE] #include <stdafx.h> #include <iostream> //line_poly_file.cpp #include <fstream> #include <windows.h> #include <glut.h> using namespace std; GLsizei wh = 250; GLsizei ww = 250; void DisplayLines ( void ) ; … |
| | I just started learning C++ let's say i have 2 classes classes A and B Class A = a1(a,b) I want an instance of class B attributes to be like this where a1 is an instance of class A: Class B = b1(x,y,a1,z) how do i go about doing this? … |
| | Hello, I am getting the following error on line 96, and also for every function implementation below line 96. What do I need to add? error: expected unqualified-id before 'void' [CODE] //Binary_tree class interface template <class Entry> class Binary_tree { public: Binary_tree(){} //constructor //Post: An empty binary tree has been … |
| | Hey everyone, I'm new to this site. one of my classmates told me about it so I'm giving it a try. anyway, for my class I need to write a code for a payroll program. so far, this is what I've written... [CODE]//Assignment 4 //Page 218 //Question 7 #include <iostream> … |
| | Can someone help me convert the following C++ code to python, please. I am fairly new to python. [CODE]void main() { int i,j,cnt,l,count[50]= {0}; char str[50]; clrscr(); printf("Enter the string: "); scanf("%s",str); printf("\n\tOriginal String is: %s",str); printf("\n\n\tEncoded String is: "); l = strlen(str); for(i=0; i< l; i*=1) { j = … |
| | Im having a problem with error message c4430 according to MSDN the warning is created when an int is not declared. Overlooking ,y code I can't find the problem is there something I am missing? here is the code [code=cplusplus] #include<iostream> #include<string> using namespace std; class student { public: ~student(); …  |
| | I want to use a array to get 50 random integer numbers ,randed 1to10, and use the * to display them. How to make this ? |
| | Below is part of the source code of an allocator from the sgistl(2.91.57) [CODE] void ( *set_malloc_handler( void(*f)() ) ) () { } [/CODE] The purpose of this function is mimic the behavior of set_new_handler. But i don't know what is the meaning of this function. return type = void … |
| | [CODE]//#include <stdafx.h> #include <iostream> //line_poly_file.cpp #include <fstream> #include <windows.h> #include <glut.h> GLsizei wh = 250; GLsizei ww = 250; void DisplayLines ( void ) ; void MyInit ( ) ; void DisplayLines ( void ) { GLint xj, yj, j; glClear ( GL_COLOR_BUFFER_BIT ) ; fstream inStream; //inStream.open("R.txt", ios ::in); … |
| | In a program, while compiling the compiler does not give an error but while executing it, i get an error.Only "Floating point exception" is printed on the output screen.Even a cout statement given at the start of the main function doesn't get executed. Can anyone help me out with this? … |
| | my code is being compiled but the window auto close after it execute value. I can do this by using getch() also but i wanto to do it without getch() .please help. [CODE] #include <iostream.h> #include <stdio.h> class greatest{ private: int x,y,z; public: void getdata(); void display(); int largest(); }; … |
| | Howdy, I have a few questions regarding the use of ctime within a class. I followed the example on [URL="http://www.cplusplus.com/reference/clibrary/ctime/strftime/"]http://www.cplusplus.com/reference/clibrary/ctime/strftime/[/URL] When the program is like this, it works: [CODE] #include <ctime> #include <iostream> using namespace std; int main(){ time_t current_seconds; current_seconds = time(NULL); //Fills current_seconds with the number of seconds … |
| | I have created a program store user data in file. But i am only getting one error only but i am unable to debug it. Please help me I used turbo C++ compiler Error is on the line int employee::search_for_employee( int choice, name_temp[20] , email_temp[50]) Here is my code [code] … |
 | I am trying to make a static library using Code::Blocks and when I make a new static library project it generates a cpp file with functions encased with [ICODE]extern "C"[/ICODE] I am just wondering if this is necessary or if I can write the functions in normal c++ as well. |
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