I keep getting an error here and cant quite figure out why,
Code: else if (mainMenu == 3){ cout << "Please make a selection" << endl << " 1) Withdraw from account" << endl << " 3) Back to main menu" << endl; cin >> withdrawMenu;
After compiling it is giving error as : foo.cpp: In function ‘int Foo_max(Foo*)’: foo.cpp:26:37: error: expected primary-expression before ‘int’ foo.cpp:26:46: error: expected primary-expression before ‘int’
I wrote a program, that generates 20 random integers, and stores them in an array. Then I decided, to build more functions to it, i.e why not have it to display the lowest integer of an array. I created my function,
Code: int minValue( int field[ ] )
and got my code in side, which (technically) works. In my main() function I'm calling
Code: printf( "The smallest value of an array is: %d ", minValue( field[] ) );
and I'm getting an error trying to compile it.
Code: randomArray.c:62:74: error: expected expression before ']' token printf( "The smallest value of an array is: %d ", minValue( field[] ) );
Code: void change(pixel_t *pixel, int w, int h, pixel_t *buffer) {
int average, sum; int i; pixel_t *pointer;
Everything else works fine. I keep getting an error when I call the convert function. It says "expected expression before pixel_t" and "too few arguments to function "change". I know that everything else in the main is working.
It's been awhile since I've coded in C. I'm picking it back up to get some practice. I'm going through my old programs from a few years ago, and I ran into one where I'm calculating the entropy of a file. The problem I'm having is that everytime the program runs, no matter what file I choose for it to calculate the entropy on, it gives 3.00000 as a result. I've gone through it and can't seem to figure out why it's possible doing that.
I notice I keep making the same mistake of not declaring certain objects, variables or lists inside the constructor so they e.g. a list populates when the view loads.
Which makes me think about it this way. Why do I need the constructor and when do I declare objects inside the constructor?
Maybe it just comes down to me not understanding the fundamentals of how to utilize the constructor.
i am writing this bank accounts program using structures. i haven't implemented the function before that i want to check if the data is being read and printed. When i build and run the program in visual studio it gives me the following error. "No constructor could take the source type, or constructor overload resolution was ambiguous". Now whats wrong in this program?
/* Bank Accounts Program */ #include <iostream> #include <string> #include <fstream> #include <cstdlib>//needed to use system() function using namespace std; const int MAX_NUM = 50; struct Name{
#include <iostream> int ival1 int ival2=1 int summe /* run this program using the console pauser or add your own getch, system("pause") or input loop */ int main() {
This first Dowhile loop is saying "expected unqualified-id" at the do and while parts. What does that mean
do { do { do { std::cout << "Give me a test result or grade from 0 to 100 for class"<< 1 << std::endl; std::cin >> mathaverage[mathtestcount]; loopresult=1;
I have a template class (A) that derives from a either a base class that has a member (_A1.m) or not (_A0), based upon it's template parameter. class (A) has a member function (fn) returns the value of (m) as it understands what (m) is.
However, this gives different results compared with a non-template class in a similar scenario. I'm expecting that if derived from _A1, that m should be taken from the base class scope and if derived from _A0, it should be taken from the global one.
Here is the code for your amusement:
int m = 5; class _A0 { public: _A0(int) {
[Code] ....
This compiled using g++ 4.5.3 and 4.6.3 with the same results: Global value of m is: 5 B0 class has no internal m member. Object resolves m internally with value 5 B1 class has internal m member. Object resolves m internally with value 3 A<_A0> class has no internal m member. Object resolves m internally with value 5 A<_A1> class has internal m member. Object resolves m internally with value 5
#pragma once #include <iostream> class CBox // Derived class { public: // Constructor explicit CBox(double lv = 1.0, double wv = 1.0, double hv = 1.0) : m_Length(lv), m_Width(wv), m_Height(hv){}
[Code] .....
Before the program ends, at return 0;
I would expect the CBox destructor to be called 3 times but it is being called 6 times? Why? Also in this code:
#pragma once #include <iostream> class CBox // Derived class { public: // Constructor explicit CBox(double lv = 1.0, double wv = 1.0, double hv = 1.0) : m_Length(lv), m_Width(wv), m_Height(hv){}
[Code] .....
Why is the destructor called 3 times? When have you really destroyed a CBox? Doesnt emplace only create it and store it, then thats it?
[URL] .....
For pushback:
void push_back(value_type&& _Val) {// insert by moving into element at end if (_Inside(_STD addressof(_Val))) {// push back an element size_type _Idx = _STD addressof(_Val) - this->_Myfirst;
I'm trying to perform a simple input operation, and check to make sure that whatever the user input is a valid input (is within data type bounds, is correct data type...). But when I get to ignoring the input, I keep getting an error.
unsigned short num; while (true) { std::cin >> num; if (std::cin.fail()) { num = 1;
#include <stdio.h> #include <math.h> main() { int n; int k; int j; //gets user input for length of string printf("Enter the value of n:"); scanf("%d", &n);
[code]......
When I compile my code I get an error saying that I need declaration specifiers in my is_prime subroutine in the for loop.
I am trying to parallelize some of my code with OpenMP. When I switch to using multiple threads I start getting random numbers that are out of the expected range.
Here is a small example:
Code: #include <stdio.h> #include </usr/local/include/gsl/gsl_rng.h> #include </usr/local/include/gsl/gsl_randist.h> int main() { int mySeed=0; const gsl_rng_type *T; T = gsl_rng_ranlxs2; gsl_rng *r_1 ;
[Code] .....
gsl_rng_uniform should only output number in the range [0,1) but with multiple threads it outputs larger number as well.
I tried my best but I can't figure out the problem. At the last part of "createArray", I output the final array created. I mean it to repeat once but then it repeat more times than I expect. createArray is an iterative function. If it repeats 3 times, than at last the array created which fulfil the criterion would be printed out 3+1 times.
I am trying to create an array with 3 numbers 5 times, resulting in a 2D array. The 3 numbers in a array are picked from 0 - 5. I enter createArray(5,3,5). Then these 5 arrays are compared with each other to see if there are repetitions. If there are, the whole process begins again, 5 arrays with 3 numbers each will be picked again and compared with each other. If there are no repetitions at last, there 5 arrays would be printed out.
void deleteArray(int** array){ delete[] array; } int** createArray(int simu_times, int randomrun,int numberofrun){ vector<Int_t>fChosenRun; int** Array = new int*[simu_times];
