C++ :: Multiple Comparisons In One Block
Aug 9, 2012
Here's my program bake.cpp(name does not reflect content) I've been researching this binary error and haven't been able to find a solution...
Code:
#include "stdafx.h"
#include <iostream>
#include <string>
#include <conio.h>
using namespace std;
int main() {
//Display a list of options.
cout << "Choose your favorite:" << endl;
[Code] ....
Error code..
1>------ Build started: Project: bake, Configuration: Debug Win32 ------
1> bake.cpp
1>c:usersjonbecherdocumentsvisual studio 2012projectsbakebakebake.cpp(41): error C2784: 'std::basic_istream<_Elem,_Traits> &std::operator >>(std::basic_istream<_Elem,_Traits> &,std::basic_string<_Elem,_Traits,_Alloc> &)' : could not deduce template argument for 'std::basic_istream<_Elem,_Traits> &' from 'std::basic_ostream<_Elem,_Traits>'
[Code] .....
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Dec 21, 2012
I have a text file that is divided into blocks:
#1
1:animal
2:food
3:moves
4:oxygen
#2
1:eats:2
2:breaths:2
3:can:1
4:is a:1
#3
1:1:2
1:3:3
1:2:4
And the following program that displays block by block:
StreamReader streamReader = new StreamReader("G:LAB123LABWORK2.txt");
int block = 0;
while (!streamReader.EndOfStream) {
string line = streamReader.ReadLine().Trim();
if (line.CompareTo("") == 0)
[Code] .....
My problem is am supposed to add a verification code so that if i put a string e.g 1:?:? it returns the block where the string is found and gives of all possible answers.
Attached Files : LABWORK2.txt (240 Bytes)
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Apr 27, 2013
How do I add a counter for the comparisons so that it increments every time the two array value are compared?
// Session5.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <iostream>
using namespace std;
const int NMAX =10;
[code].....
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Apr 23, 2015
My assignment is "Search Benchmarks: Write a program that has a sorted array of at least 20 integers. It should call a function that uses the linear search algorithm to locate one of the values. The function should keep a count of the number of comparisons it makes until it finds the value. The program then should call a function that uses the binary search algorithm to locate the same value. It should also keep count of the number of comparisons it makes. Display these values on the screen."
I'm unsure how to make it show the number of comparisons it takes to find the value for the binarySearch function. Also, where to put the selectionSort function the teacher said we need. This is what I have...
#include <iostream>
using namespace std;
int linearSearch(const int a[], int num);
int binarySearch(const int a[], int num);
void selectionSort(int a[]);
[Code] .....
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Jun 18, 2012
I need to turn off internet access for SPECIFIC website locations. I use C++ Builder 2010 or Delphi 2010.
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May 1, 2014
I start working on CodeBlocks and stuck in a situation. The situation is that I want to clear my output screen every time the main function calls some other functions. To do that I use clrscr() function but its not working. After spending some times on web, I found that its a non-standard function so this extension is not used by the new compiler's. Another thing I find to use < cstdlib > library. But unfortunately it do works only for C. It works for C++.
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Dec 7, 2011
I have a program that I can only run one instance of. When I try to start it a second time, it doesn't do anything. I would like to create a script that loads the program in a way that I can run multiple instances. Since I assume the program checks the process tree on startup to see if an other instance is already running, I figure disabling access to the process tree could do the trick.
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Sep 8, 2014
#include<iostream>
using namespace std;
int main(){
int size_col = 12;
int size_row = 12;
char months_array[12][12] =
[Code] ....
I am having problems with passing a block of a char to a variable, so i could print it out.
It gives me an error: value of type *char cannot be assigned to a entity type char.
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Feb 3, 2014
I just want my program to run continuously until someone enters 0 to exit it. I tried doing while(x=1) and looping my entire block of code. Also there is a switch one is a for one is a while loop both doing the same function. I have basic error checking and whatnot.
/*This is a program that gets a user to input a starting and ending value.
The code then prints the number ie 1 and 5 would be (1,2,3,4,5) and all the squares and cubes.
There is a case statement asking weather you want to run it as a for or as a while loop.
The choices are case sensitive.
*/
#include <stdio.h>
#include <stdlib.h>
#include <math.h>//allows for power and cube function
int x;
int main(){
[Code] ....
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Sep 29, 2013
For class we are required to implement a signature block on all our assignments. To do this I've created a Signature Block class, but I'm having trouble implementing it. When I try to compile in Dev C++ I get this error:
[Error] request for member 'toString' in 'myblock', which is of non-class type 'SignatureBlock()'
Here is the code:
Assignment1.cpp
#include <iostream>
#include <string>
#include "SignatureBlock.h"
// Assignment 1: Requests user's name and says "Hello."
using namespace std;
int main(int argc, char** argv) {
string name;// string to store user's name
SignatureBlock myblock();// create a signature block object
[Code] ....
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Oct 24, 2013
there are illogical results by using try and catch block
#include<iostream>
using namespace std;
class Circle_computations {
public:
double area,circumference,radius,pi;
public:
Circle_computations() {
[Code] ....
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Feb 2, 2015
int a = 9, b = 4, c = -1;
c *= --b * a;
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Apr 25, 2013
I have a program including several code blocks in the following simplified structure:
int main() {
// block A
if(a > 0) {
}
// block B
if(a > 1) {
} }
Block A and B should be executed separately, according to entry from keyboard. For example, if entry "1", block A will be executed and block B will be ignored; if entry "2" the inverse will happen.
I can control the execution of these two blocks through macro but the code will be separated during compilation. But is there a way to control them without using macro?
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Nov 3, 2014
I am working on a program that does something like this,
Void main() {
cout<<"H";timedelay(1);
cout<<"E";timedelay(1);
cout<<"L";timedelay(1);
cout<<"L";timedelay(1);
cout<<"O";timedelay(1); //timedelay(int a) is a function which gives a delay of 'a' seconds.
{
....
}
}
This code is just for fancy and I would like to squish in some statements which would give the user an option to skip it (by entering any keyboard key),and resume with the rest of the program.
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Mar 12, 2012
I am designing an application in which I need to deal with many different variables in which different sequences of bits are stored. I have very strict memory requirements so I decided to use the boost::dynamic_bitset data type which works very well in my scenario as I need to dynamically allocate/deallocate/resize the variables.
The only problem is that I am not able to change the size of the blocks in which the dynamic_bitsets are stored.
I mean, even if I specify the blocks should be "unsigned char", I always obtain 32 bytes allocation by sizeof function, even if the variable is empty.
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Feb 11, 2013
Is there a quick shortcut (like CTRL+something) to comment out/ decomment a large block of code in Dev C++ when it is selected?
I find it tedious to go line by line and add the // in front of each line.
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Apr 29, 2013
How to print a year like DIGITAL CLOCK NUMBER for any input four digit number ...
For example if input 1000 the output should be 1000 but each number should look like this in the block form for example number 0 is, don't mind those stars, i did not know to print it here, that is number zero ...
======
=****=
=****=
=****=
======
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Mar 27, 2014
Suppose, I have point_c, line_c and block_c three classes:
class point_c {
public:
double x, y;
};
class line_c {
public:
vector<point_c> Pt;
[Code] ....
As you can see, lines are composed of many points, and blocks are composed of lines and points. And I defined some member functions, so that I can add points or lines as required by line and block.
But, here comes the problem, if I use line.insertPoints(), or block.insertPoints(), the points will be stored in line or block. That is not what I want.
I want have a single place to store all points, a single place to store all lines, and a single place to store all blocks.
Then I guess I need some global variables
vector<point_c> Pt;
vector<line_c> Ln;
vector<block_c> Bk;
And I should change the classes into:
class point_c {
public:
double x, y;
};
class line_c {
public:
vector<size_t> PtIndex;
[Code] .....
in this way, the member functions will create the real entities into the global vector and set an index pointing to that entity. But this approach just make me feel it is not OOP anymore. when people using these classes, they got be careful about the global variables.
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May 21, 2014
0
down vote
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So, I'm attempting to create a grid on the screen, and to do so, I've implemented a multidimensional array of Rectangles. When the program starts, I use a for loop to increase the x and y coordinates to form the grid.
public Form1() {
InitializeComponent();
for (int x = 0; x < 12; x++) {
for (int y = 0; y < 12; y++) {
[Code] ....
My issue is trying to figure out when the user has clicked on a rectangle, and furthermore, which rectangle in the array that he/she has clicked on. As I will change the border to red when given the correct rectangle.
I'm using Visual Studio 2008, and here is my code so far.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
[Code] .....
I'm making this into a real game, with classes and all.
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Aug 6, 2013
I am using new operator, I don't recall what the allocator's name is. But what is the corresponding Exception (or derived classes) any try-catch block can cope with?
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Apr 14, 2013
I'm working on a program which creates data and saves it into blocks (different files), then reloads and converts it all. the .ftl file saves properly, but for some unknown reason, it won't let me open it for input after.
Here's the significant code:
#include <iostream>
#include <fstream>
#include <string>
#include <sstream>
stringstream filename;
stringstream newfilename;
string Filename;
[Code] ....
setblock will typically = 3, but for testing purposes is set to 1. this really has me confused. the compiler i'm using is Dev-C++ 5.2.0.1 on xp. i have tried pausing the program after the output file is closed, confirming the file has been created in the proper directory before continuing but still fails the .is_open() check.
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Jul 31, 2014
I want to develop an application which can host multiple views of explorer (window), where as each window is totally separate from others. So that I can have multiple desktop views through my single explorer. Any built in feature in .NET ?
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Aug 17, 2014
how to make subroutines and return multiple arrays.Before that, i wrote my program on matlab. could my program to be structured as following?
<header>
initial value of program;
subroutine1() {
calculating the first work;
return 2 or 3 arrays;
[code].....
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Mar 21, 2014
I've been working on a function that works like a pipeline of a shell but receives a directory, go over it an search for every file to send it to a filter, something like this in bash "cat dir/* | cmd_1 | cmd_2 | ... | cmd_N", The only problem i have with the code is the redirection of the pipe descriptors.
Code:
int main(int argc, char* argv[]){
char** cmd;
int Number_cmd;
cmd = &(argv[2]); /*list of cmds*/
Number_cmd = argc-2; /*number of cmds*/
}
[code]....
The code is seems to work fine except when i run it with more than one command in example ("./filter DIR wc rev") in this case it returns
wc: standard input: Bad file descriptor
wc: -: Bad file descriptor
0 0 0
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Jul 15, 2013
I'm using multiple C++ files in one project for the first time. Both have need to include a protected (#ifndef) header file. However, when I do that, I get a multiple definition error.
From what I found from research, adding the word inline before the function fixes the error. Is this the right way to do this, and why does it work? Should I make a habbit of just declaring any function that might be used in two .cpp files as inline?
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Mar 1, 2012
Say I have 5 vectors of unsigned char each of size 5. I want to take the max of each index and store it in a new vector. What is the most optimal way to accomplish this?
My slow code:
Code:
vector<unsigned char> vec1;
vector<unsigned char> vec2;
vector<unsigned char> vec3;
vector<unsigned char> vec4;
[Code]....
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