C++ :: Computing The Riemann Zeta Function?

Sep 30, 2013

I'm suppose to provide an inner loop that computes the zeta function and the other loop is just press y for to continue, anything else exit.so far i got this:

#include <iostream>
#include <cmath>
#include <stdlib.h>
using namespace std;
int main() {
double x, n,zeta;

[code]....

I can't seem to get the formula right.

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C++ :: Recursive Function For Computing Total Route

May 11, 2014

How to do recursive function for the following?

RecursiveComputeRouteDistance(p1index,p2index,locations,latitudes,longitudes): recursively computes the total distance between all waypoints (route) using computeDistance function to compute the distance between two adjacent points. You need to recursively compute the distance for the base case(s) and the general case(s).

This is my computeDistance function

int computeDistance(double a1,double b1,double a2,double b2) {
const int R=6378136;
const float Pi =3.14159;
float Dist=0;
Dist= ((Pi*R)/180)* acos((cos(a1)* cos(b1)* cos(a2)* cos(b2)) + (cos(a1) *sin(b1)* cos(a2)*sin(b2)) + (sin(a1)*sin(a2)));
return Dist;
}

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C++ :: Computing Net Pay - Too Few Arguments

Apr 13, 2013

double compute_taxes(double gpay) {
double gross;
double td; // to hold the tax deduction
if (gross <= 1000)
td = gross * 0.5;
else if(gross < 1500)
td= gross * 0.6;

[Code] ....

Write the function double compute_npay(double gpay) that receives an employee's gross pay using the value parameter gpay, computes the net pay and returns it. the net pay is the gross pay - the tax deduction. To compute the net pay, it first calls compute_taxes() to compute the tax deduction.

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C :: Computing Ratio With Array?

Feb 10, 2014

What is wrong with this code cause im not getting the correct ratio of total people to cumulative length?

Code:
#include<stdio.h>
#include<stdlib.h>
//define constant variables
#define FIRST_CAR_LENGTH 10
#define NORMAL_CAR_LENGTH 8
#define CAR_CAPACITY 4
int main(void){
//Set up some variable with values that come from input or calculations

[Code].....

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C/C++ :: Computing Bit Difference Between Two Arrays?

Jul 23, 2014

#include <stdio.h>
#include <stdlib.h>
int b_diff (int, int);

[Code].....

I am trying to take two arrays H[], and V[] and call each element to compute the bit difference(Hamming distance) and return that back to the main function to be used in calculating pixel_phase and pixel_smoothing. I'm getting an error that bit_diff cannot be used as a function and I've tried renaming it but nothing seems to work.

[ int b_diff (int a, int ] is how it should actually look.int b_diff (int a, int is how it should actually look).

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C :: Program Is Not Computing Averages From Array

Sep 23, 2013

This code is not computing the averages.. I am trying to add up all the values in the array and divide them by the number of addresses in the array

Here is the snippet of what I have do far :

//Run through all possible train combinations

Code] :

for(tl=10; tl<=max_tl; tl+=8) {
n_cars++;
num_trains=(.25*max_track)/tl;
num_people=n_cars*num_trains*4;

[Code] ....

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C/C++ :: Right Triangle Program - Computing Lengths Of Sides

May 5, 2014

I made a simple program to compute the lengths of a triangles sides, but when I enter 30 for angle and 10 for hypotenuse I get the opposite side is -9.880316 and the adjacent is 1.542514.

#include <stdio.h>
#include <math.h>
main() {
float angle;
float hypotenuse;
float adjacent;
float opposite;

[Code] ....

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C++ :: Finding Pi Through Computing Area Of A Quarter Circle?

May 4, 2015

question: Finding pi through computing area of a quarter circle

my code

PHP Code:

#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;
int main() {
    int sum=0;            
    double PI,h,x;            
 
[Code] .....

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C :: Verified Code For Computing Fast Furrier Transform Of Image

Jun 9, 2013

i am looking for a verified code in simple c, for generating fft of an input image (.jpg). the output can be a text file including fft coefficients.can you recommend me any source except open-cv?

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C :: Computing Grades From Input File And Writing To Output File

Aug 31, 2014

One of my class assignments is to create a program that receive a .txt file containing a students name and their grades as follows: John K. 99, 87, 57, 89, 90, 95 Amanda B. Jones 100, 88, 76, 99, 86, 92 etc.. The number of students is unknown until run time. You have to take those grades and average them weighing the first (4) at 10% a piece and the next (2) at 15% each and the final at 30%. Then return an output file with the students name and their letter grade A,B,C,D,F based on their computed score. In addition, on screen it needs to display the average scores for each Q1, Q2, etc. as well as the minimum and maximum for each test on the screen. I am having a hard time in assigning the scores to a variable so that they can then be computed as an average and then used to determine a letter grade. I have begun to write the code and am a bit stuck..here's what I have so far:

Code:
//
// main.c
// Final Exam
//

[Code].....

The problem I'm having now is how to go about passing the grades to the function computeGrade and then compute the average and return that to the function.

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C++ :: Syntax Error In Function Call - Type Mismatch In Parameter In Function Sort

Jul 6, 2014

error says "cannot convert 'int*' to 'int' in function main()
and also
type mismatch in parameter in function sort(int,int)

Heres the code:
#include<iostream.h>
#include<conio.h>
void main() {
void sort(int,int);
clrscr();

[Code] .....

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C :: Function That Will Work For Both Dynamic And Static Implementations Of A Function To Get Transverse Of Matrix

Feb 11, 2013

i need a function that will work for both dynamic and static implementations of a function to get the transverse of a matrix. so far, i have this

Code:

matrix transpose(matrix m)
{
int row, col;
row = m.com_dim;
col= m.row_dim;
}

[code]....

this works well with my static implementation, but when i try it in dynamic it gives me errors. the function has to be the same for both dynamic and static implementation

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C++ :: Keyboard Function That Is Called In Main Function To Make Shape Move

Jan 19, 2013

Ok so I am working on a game and I'm in the process of developing my Player class. Anyways, what I have is a keyboard function that is called in my main function to make a shape move.

void myKeyboardFunction(unsigned char key, int x, int y) {
switch ( key ) {

[Code].....

But when I try to call it, trying to copy my previous method,

glutKeyboardFunc(Player1.playerControls);

I get an error

error C3867: 'Player::playerControls': function call missing argument list; use '&Player::playerControls' to create a pointer to member

I get an error saying it can't convert parameters. I would just like to understand why the arguments become a problem when I make the function a member of my class, when the first method I used is so easy.

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Visual C++ :: Error C3867 Function Call Missing Argument List For Calling Thread Function

Mar 19, 2013

I searched the web for error: C3867... and the discussions where murky or obscure.

My code excerpt is:

#pragma once
#include <windows.h>
#include <stdlib.h>
#include <process.h>
void PutUpfrmIO(void *);
namespace WordParsor {

[Code] .....

I get the generic message:

error C3867: 'WordParsor::Form1::PutUpfrmIO': function call missing argument list; use '&WordParsor::Form1::PutUpfrmIO' to create a pointer to memberc:userskingc++wordparsorwordparsorForm1.h... and the suggestion fix generate another error.

One person suggested the gcroot<> object wrapper... but I do not know how to modify/declair the function or its argument type.

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C :: Reverse Function That Inserts And Prints Binary Function Correctly

Nov 3, 2013

I have written a function that inserts and prints a binary function correctly.

For example a tree like this [URL] ..... would print like this

Code:
node: 10
node: 7
node: 6
node: 8
node: 9

[Code] ....

Here is my print function

Code:
void prt_tree(struct node *tree) {
if (tree == NULL) {
printf("Null Tree
");
return;

[Code] .....

Could I just make some adjustments to my function to reverse it? and if so, how?

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C++ :: Pass 2 Arrays Into Void Function And Return Values To One Function?

Feb 12, 2014

I'm trying to pass 2 arrays into a void funtion, and return values to one function.

this is the the program I'm working with, after I'm done I have to split it into 3 files, a header, a main, and a separate cpp file for the functions to live in.

#include <iostream>
using namespace std;
void processArrary(int numberCount[], int Numbers[], int intnumberSize, int numberCountSize);
int main() {
int Scores[26] = {76, 89, 150, 135, 200, 76, 12, 100, 150, 28, 178, 189, 167, 200, 175, 150, 87, 99, 129, 149, 176, 200, 87, 35, 157, 189};
int numberCount[8] = { 0 };

[code]...

The goal of this program is to separate and count the groups of numbers then output the amount of numbers in each group. Near as I can tell, everthing should work, but I'm getting all zeros to be displayed in each group.

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C :: Main Function Does Not Return Any Values When Calling Other Function?

Jun 9, 2013

The function is supposed to return value from the file in my main, but I am getting empty value. I am trying to get better with pointer. Right now just teaching myself.

right now the only way for this code to show value is when in put the putchar(*ps) inside my readfile function. I would like to readfile to return value and print in the main function.

Code:

#include <stdio.h>
char *readfile(char filename[]);
int main(int argc, char *argv[] ) {

[Code].....

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C++ :: Calling Base Function From Derived Overloaded Function

Nov 10, 2014

Here is a sample of my question

class Base{
public:
int getNum();
private:
int numToGet;
}
class Derived: public Base {
public:
friend ostream& operator<<(ostream& output, const Derived &B);

[Code]...

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C++ :: Passing 2 Dimensional Array Through Median Function To One Of 2 Other Function

Aug 20, 2013

I want to use one median function "selectfunction" to choose one of the 2 other functions at random to pass my 2-dim array to the selected function. There is a problem in the median function

#include <iostream>
#define random(x)(rand()%x) // for random number between numbers of 0 and 1
using namespace std;
void proc1 (int iArray[][2]);
void proc2 (int iArray[][2]);
void selectfunction(int iArray[][2]);
int A[4][2] = {{1, 2} , {3, 4} , { 5, 7} , {8, 1} };

[Code]...

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C++ :: Using Template Function Inside Class In Separate Function?

Mar 26, 2014

i want to use a class to print data stored as vector or array with different data types. i also want the print function two take more than one vector or array or combination of both so that they can be written to file as two columns. so i wrote the following class:

right now it has only one member function for printing two vectors. later i'll add additional functions as required.

note: there has to be template functions inside the class
i also want the object to be global so that i need not pass it as an argument to other calling functions

class printdata
{
public:
template<typename T1,typename T2>
void SaveData( vector<T1> &data1,vector<T2> &data2, std::string var)
{

[Code]....

then i want to call this template function in another ordinary function written in a seperate cpp file

these function declarations are put in a header file. so i need know whether i should put the declaration of the template function in the header to use the function in different functions

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C++ :: Calling Function By Sending Char Text Of Function Name

Feb 19, 2014

Is this possible?

int myfunc( int a, int b, char * c )
char a = "(int)myfunc()";
char b = "(int,int,char*)"
call(a, b, ...) // Function name and return type, params

I want to do function what registers forward what will get callback if the time is right. Basically then i dont need to edit and add extra functions into source files. I just have to include header and use register forward function. If there is anything close to this it would be perfect!

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C/C++ :: Using Template Function Inside A Class In Separate Function?

Mar 26, 2014

i want to use a class to print data stored as vector or array with different data types.

i also want the print function two take more than one vector or array or combination of both so that they can be written to file as two columns.so i wrote the following class:

right now it has only one member function for printing two vectors. later i'll add additional functions as required.

note: there has to be template functions inside the class / i also want the object to be global so that i need not pass it as an argument to other calling functions

class printdata {
public:
template<typename T1,typename T2>
void SaveData( vector<T1> &data1,vector<T2> &data2, std::string var){
std::ofstream myfile;
std::string filename;

[code].....

then i want to call this template function in another ordinary function written in a seperate cpp file these function declarations are put in a header file. so i need know whether i should put the declaration of the template function in the header to use the function in different functions.

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C/C++ :: How To Hook Function From Same Process And Get Address Of Caller Function

Apr 27, 2013

I need to do it to avoid calling a function of my process from injected code.

So would like to hook this function to check whether the call is from the current module or it is from an external module, then I compare the address of the instruction who did the call with the module address range.

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C++ :: Retrieving File Object From Function Then Pass To Another Function?

Jun 27, 2014

I would like to have 2 functions. (FYI, I haven't even tested these because I don't have a compiler on this PC, so don't know what they'll do. I'm also new to C++, self-teaching.)

My question is, I'm sure that oFile should be type object (of some sort), not int, but I'm not sure how to reference it correctly so that it passes from FileOpen to main to FileClose.

Code:
#include <iostream> //I/O
using namespace std;
#include <fstream> //files
using namespace ios;
int FileOpen(string fileName) {
ifstream oFile (fileName); //attempt to open file

[Code] ....

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C :: Function Name To Wrap Standard Strncpy Function

Nov 5, 2014

I need a function like strncpy; but, want to be sure the destination ends with a ASCII nul char.

So, I wonder what name is used by others in this case.

I have found strlcpy and it looks like a good name choice. [URL] ....

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C :: How To Pass Main Function Argument To Some Other Function

Dec 26, 2014

I am writing a program in which a Fucntion has to be wriiten to parse the Command Line . When I include Code for parsing in main fuction iteslf ,its run ok . But I want to make a fucntion of that code and call it from main ,than it show Segmentation error .

By using Debugging I found Some thing is mess with " -m" Parameter of Command line , But Cant Rectify it ..

Code:
int main (int argc, char *argv[]){
//get_parameter_value(argc,argv);
// buffer[packet_size+1]= char ("'");
while (argc > 1) {
if (argv[h][0] == '-')

[Code] .....

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