C/C++ :: Matching Input Value To Values In Array

Apr 1, 2015

I have developed the following code for a PIC18 micro-controller. The object of the program is to compare a input value (presumably from a magnetic swipe card), represented here as scan_id, to a list of valid access ID's represented by the array valid_id. If there is a match the program will drive an output pin high to light a green LED for 20 seconds. If there is not a match the program will drive an output pin high to light a red led for 20 seconds.

The issue that I am having is that when the program is executed, the "else" case for the red LED is always selected regardless of the value for scan_id. If I change the "if" statement from == to = then the case for the green LED is always selected regardless of the value for scan_id.

#include <p18f452.h>
#include <stdlib.h>
#include <stdio.h>
#include <delays.h>
void main () {
TRISA=0xFF; /* Configure PORTA<7:0> pins as inputs */
TRISB=0x00; /*Configure PORTD<7:0> pins as outputs */

[Code] ....

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C++ :: Allow User To Input Name And Search Matching Names Among Boys And Girls

Apr 22, 2013

The textfile babynames.txt, which is included in the books website, contains a list of the 1000 most popular baby names of boys and girls. Write a program that allows the user to input a name and the program should then read the file and search the matching names among the boys and the girls. If the name is found it should output the name and the names rank. It should also indicate if their is no match. How to start this.

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C++ ::  how To Input Values Into Array Via Functions

Sep 5, 2014

What "int values" is supposed to mean as parameters to these functions? I'm not sure what do with them. Also how to input values into the array via functions. I was trying to but I just don't understand how to connect a user's input to a function to then enter into an array.

// input reads “values” integers from the user to place in the array data. It prompts the user for each value individually with the ordinal position of the value.
void input (int data [size], int values);
// Places the sum of corresponding values from arrays a and b and places the results in array s. The first “values” integers in the array are processed.
void do_sums (int a [size], int b [size], int s [size], int values);

[Code]...

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C :: Can't Input Values In A Dynamically Allocated Array

Oct 5, 2014

this is my function for allocating memory in 2D array

Code:

#include <stdio.h>
#include <stdlib.h>
int allocate_array(int **array, int *row, int *column){
int i;
}

[code]....

end of allocate_array function and this is my function for asking for the values to be stored in array

Code:

int input_array(int **array, int row, int column){
int i, j;
//ask for the values to be stored in the 2D array
for( i = 0; i < row; i++ ){
for( j = 0; j < column; j++ ){
}

[code]....

why I'm having error here in my input_array() function

Code: scanf("%d", &array[i][j]);

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C++ :: Using For Loop To Input And Output Array Values

Jan 23, 2014

so i got this piece of code today having some slight errors with it, how its actually done as i want to know where i have gone wrong here is the code .. Using a for loop to input and output array values

*/
#include <stdio.h>
int main(void) {
/* Declare an array of integers */
int Grades[5];
int nCount;
/* Populate the array */
for(nCount = 0; nCount < 5; nCount++)

[Code]...

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C++ :: Passing Values Into Array Using For Loop From Input File

Jul 5, 2014

I'm trying to pass these numbers into the array using the for loop: 1, 2, 3, 4, 5. I created two files in my project called "inStuff.txt" and "OUTPUTS.txt". I know I have an error at my input in the for loop, which is a bit similar to my problem or something? I'm also on linux using a crossGCC complier(not sure if that makes a difference).

#include <iostream>
#include <fstream>
using namespace std;

[Code]....

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C++ :: Using A For Loop To Input And Output Array Values Also Calculate The Average

Jan 24, 2014

I have this code that im stuck on what i need to do is Extend the code such that when it starts the user is asked to input values to specify each of the three ranges before moving on to accept and tally the main values how do i do that Using a for loop to input and output array values Also calculate the average

*/
#include <stdio.h>
int main(void)
{
/* Declare an array of integers */
int Grades[5];
int nCount;
int nTotal = 0; /* Declare and initialise the value */
float fAverage;

[Code]...

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C++ :: 2-dim Array Display Output For Matching Game

Apr 10, 2014

I am creating a matching game, using US States and a 2-dim array.

As you can see, when the below code runs, some of the grid tiles appear offset, and when selected by pressing spacebar, do not appear.

Here is the .h file:

#include "stdafx.h"
#include <iostream>
#include <cstdlib>

[Code]....

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C++ :: Create Simple Input Interface On Console - Allow To Input Values To Variables

Apr 6, 2013

I am trying to create a simple interface on console to allow to input some values to some variables. For ex:

int main() {
double a = 1.5;
double b = 2.5;
double c = 3.5;
string x;

[Code] ....

However, I want these three to display at the same time (now they display one by one), and in the console window I can move the cursor between input place of a, b and c with "arrow key" of keyboard.

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C/C++ :: Compare Values Stored In First Array To User Inputted Values In Second Array

Oct 19, 2014

Goal: Write a program that compares the values stored in the first array to the user inputted values in the second array.

In order to fix this error: [URL]...

I had to change my array initialization to one with a star in front of it:

char a1[]={"a","d","b","b","c","b","a","b","c","d","a","c","d","b","d","c","c","a","d","b"};
to:
char *a1[]={"a","d","b","b","c","b","a","b","c","d","a","c","d","b","d","c","c","a","d","b"};

I also changed my 2nd array to one with a star in front of it: char *a2[20];

What does this mean exactly? Putting a star in front of an array?

Also, I am now getting an "unhandled exception" when I try to get input for my 2nd array:

cin>>a2[i];

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C++ :: Input Only Values Between 2 - 7

Jan 4, 2015

I want to input only values between 2 - 7 what is wrong?

do{
cout<<"Podaj wykladnik
";
cin>>b;
}while(b<=2 && b>=7);

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C++ :: Print Out All Input Values

Mar 16, 2013

I have a problem with how to print out all the numbers that the user enters the code looks like this so far:

Code:
#include <iostream>
using namespace std;
int main()

[Code] ....

I want the program to print out all the numbers that the user has entered after the program have said the higest and lowest number is ?. But I do not know how to do this I thought it could be something like this:

Code:
cout << input[0];
//or
cout << input[i];
/*

Because i is the number of how many enters of numbers the user can do*/ But that was totally wrong tried to do another "for loop" in the first for loop but that was meaningless because it can't change anything in the first "for loop".

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C/C++ :: Calculate Sum For Input Values Of X And N

Feb 27, 2015

I added my assignment to attachment, i need to calculate the sum for input values of x and n this is my code:

#include<stdio.h>
#include<math.h>
main() {
float gore,dole,s,x;
int n,i,j,z;
s=0;
i=0;
j=0;

[Code] ....

gore calculates x^(2*i)-3 and dole is for (2+i)! for input x=1 and n=1 i get -2.0 output which is the value of x^(2*i)-3 the (2+i)! part gets ignored for some reason, for any other input i tried the output is 0 ....

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C++ :: Input Showing As Default Values?

Nov 30, 2013

Same solution that I was having compiler errors on yesterday. We're working with inheritance and the program is supposed to be to create and display information for default Employee objects, Hourly Employee objects and Salaried Employee objects. Everything compiles as is, but I'm running into two issues that I can't figure out.

1) In both the hourly and salaried objects, the wage, hours, and management level attributes all displaying their default values. I'm almost positive that this has something to do with the str to int and str to double conversions that I'm using (currently have atoi and atof in the file, but I've also tried stringstream, but still had to same problem). Any thoughts as to what I'm missing?

2) the assignment calls for the Benefit benefit member in Employee.h to be protected. However this makes the member unaccessible when I try to use it in the EmployeeMain.cpp in order to set the input for the Benefit class members. I had to make the Benefit benefit member public again to get it to compile. How would I set the input for the Benefit class members while the Benefit benefit member is protected?

Solution files follow:

EmployeeMain.cpp
Code:
#include "Hourly.h"
#include "Salaried.h"
void DisplayApplicationInformation();
void DisplayDivider(string);
string GetInput(string);

[Code]....

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C# :: Compare Values From User Input

Nov 3, 2014

What do I put to have UserNumber == 1-10? In other words I want it to say...

if UserNumber equals 1 through 10 <<<<This is where I'm having the issue.

Do this
Else
Do this

namespace ConsoleApplication1 {
class Program {
static void Main(string[] args) {
Start:
Console.WriteLine("Please enter a number between 1 and 10");
int UserNumber = int.Parse(Console.ReadLine());

[Code]...

I got it.

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C++ :: How To Get Code To Read Multiple Input Values

Feb 10, 2013

So I have to write a code for my C++ class, and I am having a problem trying to figure out how to get my code to read multiple int values. This is what my code should look like

Enter two times in military format (e.g., 1730 1520): 1730 1520
[1520<1730]
Enter two times in military format (e.g., 1730 1520): 1520 1730
[1520<1730]
Enter two times in military format (e.g., 1730 1520): 1730 1730
[1730==1730]
Enter two times in military format (e.g., 1730 1520): 1760 1520
1760: [INVALID TIME 1]
Enter two times in military format (e.g., 1730 1520): twelve 2
[INVALID NUMERIC INPUT]

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C# :: Accept Two Input Parameter And Returns Two Out Values

Jan 26, 2014

class Program {
//Accept two input parameter and returns two out value
public static void rect(int len, int width, out int area, out int perimeter) {
area = len * width;
perimeter = 2 * (len + width);

[Code] .....

why is the static keyword required in the method signature for the rect() method. It will not compile if it is absent. why?

the same is true for this example:

class Program {
static void printvalues(params int[] passedin) {
foreach (var printthis in passedin) {
Console.WriteLine(printthis);

[Code] ....

This code won't compile without the static keyword in the printvalues() method signature. why?

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C++ :: Can't Store Different Values Into Vector By User Input

May 4, 2013

I can`t seem to store multiple values into my vector when a user keys in an input. Lets say a user inputs 1,2 as the first set and later keys in 3,4.

My vector gets overridden by 3 and 4. I'm trying to pass these values into a function to store them into a vector and use them in the function.

Below is my code snippet

int reconstructSecret(int x, int y) {
int getX,getY;
getX=x;
getY=y;
vector<int> myXCordVec;
vector<int> myYCordVec;

[Code] .....

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C++ :: Set Width Of Data Values Which User Will Input

Sep 24, 2014

I am trying to set the width of the data values which the user will input when using the program but I don't know how to get it to show the values when I tryto set the width of the variables in a nice column .

//Programming Assignment 4

#include <iostream>
#include <iomanip>
#include <cmath>
#include <string>
using namespace std;
int main() {
double q1r1, q2r1, q3r1, q4r1;
double q1r2, q2r2, q3r2, q4r2;
double q1r3, q2r3, q3r3, q4r3;

[Code] ....

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C++ :: Unable To Extract Unsigned Values From Input Stream

Jan 16, 2015

I am trying to extract unsigned values from an input stream. I expect the extraction to fail when an invalid character is extracted. It fails correctly when I try to extract an unsigned int from "abc", but when I try to extract an unsigned in from "-1", the extraction succeeds, and the max unsigned int value is extracted (as if -1 were cast to unsigned int). I would expect the '-' to cause the extraction of an unsigned value to fail.

The code I am using is below.

#include <iostream>
#include <sstream>
#include <string>
#include <limits>
int main() {
unsigned int value = 8;
std::string negString = "-1";

[Code]...

Is this standard behavior for an istream extractor?

I am trying this in both Linux (gcc 4.4.3) and in windows with Code::Blocks (whaterver came with CB 13.12, apparently gcc 4.7.1)

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C++ :: Incrementing Values In Vector Based On Variable Input

Mar 24, 2014

I'm trying to increment the values in a vector, not the vector size, based on variable input. Basically I have a vector of size 10, and all of its values are initialized at zero. The program counts the frequency of numbers 0-9 in a four digit user input. This is what I have (I want it to work so badly but the compiler says that I'm using a pointer to a function used in arithmetic):

for (int i=0; i < num_slots; ++i) {
++guess_frequency[guess[i]];
}

I just want to know if you can increment values within a vector:

E.g.
change
0 0 0 0 0 0 0 0 0 0
to
1 0 0 0 2 0 0 1 0 0

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Visual C++ :: Program Doesn't Accept Input Values True?

Nov 1, 2014

I am making a program which is going to print out a head image according to the input values entered by the user. Here is the code:

Code:
#include <iostream>
#include <string>
using namespace std;
void Sides()
// draws the sides to take proportion

[Code] .....

At first i tried to work program like:

Code:
cout << "plase enter which way you want to print out the head, with parted hair or bald." << endl;
cin >> headstyle;
if (headstyle != "bald" || headstyle != "parted hair" )

But it also had given the same mistake. The program compiles BUT; even if I put in the values bald or parted hair the program prints out "wrong input" then exits.

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C++ :: User Input - Calculate Sum Of Only Positive Values While Ignoring Negative Numbers

Jun 19, 2014

So I have to make a program that allows the user to enter both positive and negative numbers and the program is suppose to calculate the sum of only the positive values while ignoring the negative values. Also it is to be a sentinel-controlled loop with a number ending the set of values.

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C++ :: Create Array Of Playing Cards / Assign Values And Suits Then Shuffle The Array

Nov 24, 2014

I got this program to create an array of playing cards and assign the values and suits and shuffle the array. I'm at the point where I need to output the cards but I need to burn the first card by making it output "**" instead of the card. my cards[] is a constant so I can's assign the first card as such.

void showCards(const int cards[], int numCards, bool hideFirstCard) {
if (cards[0]) {
hideFirstCard=true;
cards[0] = '**';
} for(int a = 0; a <= numCards; a++) {
cout >> showCard(cards[a]);
} }

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C++ :: Why Can't Static Array Copy Values From Dynamic Array

Mar 13, 2013

But it can the other way around

Code:
static_Array= dynamic_Array;
dynamic_Array = static_Array;

The second statement works and i'm able to print out both arrays with equal values but with the first

[code] static_Array = dynamic_Array;I get incompatible types in assignment of 'int*' to 'int [7]' is the error I get [/code]

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C :: Print Values Of Array From Function By Passing Array?

Nov 1, 2014

I wanted to print the values of a array from a function by passing the array as well as the number of elements to be read. For a single dimensional array, this is how i have written it. It's pretty straight forward. I want to read 5 elements from the 5th element in the array.

Code:
#include<stdio.h>
void display(int array[],int size) {
int i;

[Code]....

With this code I want to print the five elements from the element present in [0][4].

But shows an error that

Code:
D:BennetCodeblocks CLearning CSingleDimentionalArray.c||In function 'main':|
D:BennetCodeblocks CLearning CSingleDimentionalArray.c|18|warning: passing argument 1 of 'display' from incompatible pointer type [enabled by default]|
D:BennetCodeblocks CLearning CSingleDimentionalArray.c|2|note: expected 'int (*)[10]' but argument is of type 'int *'|
||=== Build finished: 0 error(s), 1 warning(s) (0 minute(s), 0 second(s)) ===|

I know when you pass a array as an argument it gets decomposed into a pointer, but with a multi-dimensional array this is not the case. how this works for mult- dimensional array's?

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