C :: Implementation Of Histogram Using Functions And Arrays
Apr 12, 2013
I'm trying to code one of the problems but it really is hard to catch errors for a novice like me at first.
I have to Write a single C function for computing the histogram of a list of nonnegative integers into 4 bins.
The main() function first initializes a positive integer array called List of size N, takes 3 inputs from the user A, B, C (assume 0 < A < B < C), and declares a second integer array Bin[4].
The doBinning function should count the number of elements of List in the interval [0, A) and store it in Bin[0], count of [A, B) in Bin[1], count of elements in [B,C) in Bin[2], and the number of elements >= C in Bin[3]
Code:
#include <stdio.h>
#define N 10
#define M 4
int *doBinning (int source[], int dest[], int a, int b, int c);
int main (){
[Code] ....
Somehow I keep getting error from ptr = doBinning(List[], Bins[]. What am I doing wrong? Code might contain some errors.
You have to write a single C program that creates a one dimensional array of size MAX(to be declared as a declarative constant using directive #define MAX 10), initializes its elements with a given value using the function InitArray, then populate the array with some random numbers between 1 and MAX inclusive, and finally search the array for certain keys.
The structure for this C program is as follows:
int main() { //array A to be locally declared here int size = MAX; }
i have a program that works, but now I am trying to get function1() to work. What it has to do is bring in the array and populate it with random letters. I don't know much about functions.
Code:
#include<stdio.h> #include<stdlib.h> #include<time.h> #define maxrow 20 //defines maxrow as a constant of 20 #define maxcol 30 //defines maxcol as a constant of 30 }
I'm truing to write a function that gets an array of arrays, and returns an array. I placed the code I'm using below, but I'm getting all kinds of errors. How is the right way to do this?
I can write code that can sort arrays with Bubble, Selection and Insertion algorithms but I'm not sure how to have them be called and return a value 3 different times with 3 different sizes. For example, I need it to return 10, 100 and 1000 but I'm stuck.
#include <stdio.h> void selectionSort (int list[], int last); int main()
the book I learn from gave a task to write a program which gets a matrix , and we have to write a function that switches 2 columns or rows the user inputs .as far as I know a function can not change variables in the main function without using pointers .so , theoretically, can a function described here can be written without using pointers ? as far as I tried - it can not.
I wrote a fuction in C with the prototype 'void raisePowerOf2(int array[],int pow);'
If someone want to find the value of 2^456 ,just have to invoke this function 456 as the value for pow and int array with 2 elements :1 & -1 as the argument for the array.(There I used -1 to denote the end of the array.)
But it seems that this function doesn't give the exact answer
And I tried this from java also,with the same implementation.It produced the answer precisely .
I tried for hours, but unable to detect reasons why this code blok in C doesn't work properly
This is the code in c
Code:
#include<stdio.h> void raisePowerOf2(int array[],int pow); int main(){ int a[2]={1,-1}; raisePowerOf2(a,5); return 0; } void raisePowerOf2(int array[],int pow){
[Code]...
This is the code in java....
Code:
public class NewClass4 { void raisePowerOf2(int array[],int pow){ final int len=array.length; int store[]=new int[len+1]; int qtnt=0; for(int i=len-1;i>=0;i--){ store[i+1]=(array[i]*2)%10+qtnt; qtnt=(array[i]*2)/10;
i'm facing some problems with the array, as I have my .h and .cpp files so do i declare them as per norm of how we usually declare a function?
pointtwod.h class PointTwoD { private: int xcord,ycord; float civIndex; LocationData locationdata;
[Code] ....
when i compile the error message i get was even when i i put in int xord[]; in my PointTwoD.h file:
PointTwoDImp.cpp:99:6: error: prototype for 'void PointTwoD::storedata(int*,int*,float*) does not match any in class 'PointTwoD'
PointTwoD.h:48:8: error: candidate is: void PointTwoD::storedata(int, int, float)
PointTwoDImp.cpp: 135:22: error: 'xord' was not declared in this scope PointTwoDImp.cpp: 135:27: expected primary-expression before ']' token PointTwoDImp.cpp: 135:30: error: 'yord' was not declared in this scope PointTwoDImp.cpp: 135:35: expected primary-expression before ']' token PointTwoDImp.cpp: 135:38: error: 'civ' was not declared in this scope PointTwoDImp.cpp: 135:42: expected primary-expression before ']' token
I want to write a code that gets three values from the user and puts them into three arrays. When the user enters -999, I want to print out a chart showing all the values they put in. This is what I have so far but it wont build. It tells me std::string is requested, but I'm not sure where to put it, and printArrays is declared void. How can I fix this?
#include <iostream> #include <string> using namespace std; const int ARSIZE = 400; void printArrays (string reportTitle, int levelsArray[], int scoresArray[], int starsArray[], int i);
Description: Use functions and structures to simulate storage in a warehouse
*/ #include <cstdlib> #include<iostream> #include<cmath> #include<iomanip> #include<string> using namespace std; struct Bin {std::string name; int Quantity;}; //create a structure for "Bin"
[code].....
I keep getting a linker error on every function. what am I doing wrong?
If someone want to find the value of 2^456 ,just have to invoke this function 456 as the value for pow and int array with 2 elements :1 & -1 as the argument for the array.(There I used -1 to denote the end of the array.)
But it seems that this function doesn't give the exact answer
And I tried this from java also,with the same implementation.It produced the answer precisely .
I tried for hours, but unable to detect reasons why this code blok in C doesn't work properly .
This is the code in c
#include<stdio.h> void raisePowerOf2(int array[],int pow); int main(){ int a[2]={1,-1}; raisePowerOf2(a,5); return 0; } void raisePowerOf2(int array[],int pow){
I'm having trouble with passing a character array between functions of the same class. I have a function, buildGraph, that calls function getNextLine. The getNextLine essentially just retrieves the next line of an input file and stores it into a "char line[80]". However when I try to use "line" in my buildGraph function, it has nothing in it.
Here's my code:
Class #define NUMNODES 10 using namespace std; #pragma once class Prog3Graph
// Music Shuffle Program // This program takes an array of strings and randomly permutes their order. // This allows us to generate new song shuffles. #include <iostream>
I currently have globally declared arrays, which are accessed by multiple functions. I want to turn the program so that the arrays are no longer globally declared, but are passed to functions by reference.
I have one problem with passing the arrays: I found that, through debugging, I HAVE TO resize the array when I pass it by reference. For instance, I was using int a[10] when it was globally declared, when it is passed by reference with size 10, it does not work, instead it should be higher than 10 (certain number). Why is this happening? I do not get it...
I am working on a number of utility functions for two dimensional arrays of integers, or matrices. However I am having a problem with segmentation faults, most likely due to errors in using malloc in functions like copyMatrix.
Code: matrix_utils.h~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ //This function checks if two matrices are equal int isEqual(int **A, int **B, int n);
//This function returns one row of a matrix int * getRow(int **A, int i, int n);
//This function returns one column of a matrix int * getCol(int **A, int j, int n);
I'm able to get the graph, but now getting the border on the other side of the graph to align it with the right side of my screen.The output looks like that right now because I'm currently playing around with my y axis (right under the for loop) trying to scale everything. I've tried everything many different ways to get this to work.getting the border on the other side of the graph.
Code:
#include<stdio.h> #include<Windows.h> int main(void) { int MAX = 0; //initialize and declare variables int allcounts [10] = {0}; //store an array of integers for }
I have following code to create histogram, but it gave wrong output. In the program input_vector read 100 double numbers. I want to create a histogram with bin size=5. Output is [0;0;0;0;0].
Scaling the yaxis on my histogram for one of my class projects. I've gotten mostly everything but stuck on scaling. I'm pretty sure it's something simple to do, but I'm having trouble, and I've tried everything to my knowledge to get it scaled from 0.1 - 1, like this:
Here is my code:
#include<stdio.h> //include all preprocessor directives #include<Windows.h> int main(void) { int MAX = 0; //initialize and declare variables int allcounts [10] = {0}; //store an array of integers for int yaxis, xaxis = 0;
[Code] ....
I'm close, but every time I try and change my y axis in the for loop from 1 going down to 0.1, it doesn't give me a right output.
I have a text file which consist of several values. These values represent distance from origin to any point in the triangle. How can I create histogram from these values? Is there any functions in OpenCV which can create histogram from these values?
Below my sample values are given: .......................... 3.4 1.2 6.9 0.2 5.1 2.9 ........................
Write a function that generates 1000 normally distributed (Gaussian Probability Distribution) random numbers. Range should be between -3 and +3. Numbers should be double floating point.
There's more to it than that, but I've got it from there.
