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Search: Posts Made By: vmanes
Forum: C++ 7 Hours Ago
Replies: 10
Views: 95
Posted By vmanes
You should check where the program crashes, and read the error message(s).

Check your arguments closely - what's being used here, and what is being used without having a value assigned?
...
Forum: C++ 8 Hours Ago
Replies: 3
Views: 59
Posted By vmanes
First, the code would be clearer if your variable names better expressed what they were.

What's "total"? The input of distance driven should be "miles", not "mpg". mpg = miles / gallons better...
Forum: C++ 8 Hours Ago
Replies: 2
Solved: help please
Views: 82
Posted By vmanes
What's the largest value that can be stored in a long int?

How does that limit compare to the value you're trying to stuff into a long int?
Forum: C++ 2 Days Ago
Replies: 2
Views: 97
Posted By vmanes
results[0]= x * sin (x);
x is an array - it cannot be used as the operand of a multiplication nor as the argument to sin( ).

Did you mean to say results[i]= x[i] * sin (x[i]);?
Forum: C++ 2 Days Ago
Replies: 2
Views: 84
Posted By vmanes
Actually, it does make a difference. The declaration outside of main( ) is globally visible and modifiable. This is generally to be avoided, especially in beginning programs, as it may cause the...
Forum: C++ 2 Days Ago
Replies: 1
Views: 70
Posted By vmanes
switch blocks are not good for doing range based decision making. You have to be able to do exact matches to integral types, which is often, as you surmise, way too much work.

Use if...else if......
Forum: C++ 2 Days Ago
Replies: 10
Views: 220
Posted By vmanes
Your new function, which still has the { } problem jonsca pointed out, will return immediately after the first number is read in, depending on whether it meets the 10-500 test or not.

You should...
Forum: C++ 11 Days Ago
Replies: 4
Views: 186
Posted By vmanes
Do you have a pencil and a piece of paper handy?

This is C++.
Forum: C++ 13 Days Ago
Replies: 4
Views: 185
Posted By vmanes
You need to write a couple of hand scoring functions. You don't look for all possible combinations, but look at a player's hand and determine what, if any, of the poker hands it constitutes.
...
Forum: C++ 14 Days Ago
Replies: 3
Views: 292
Posted By vmanes
To read just 5 characters at a time to your array, you could use getline( ).

Make your array size 6 to allow for the null terminator at the end of a string, then

char arr[6];
//open your...
Forum: C++ 14 Days Ago
Replies: 4
Views: 186
Posted By vmanes
I would do a search of the daniweb c++ forum and find this problem discussed many, many times.

( I wish profs would be a bit more creative and come up with some new assignments.)
Forum: C++ 16 Days Ago
Replies: 5
Views: 207
Posted By vmanes
Hmm, bet you made the file in notepad and named it "test.txt", and Vista added the other .txt. Or VS might have done the same thing.

That's why I like to set my systems to display the file...
Forum: C++ 16 Days Ago
Replies: 5
Views: 207
Posted By vmanes
What compiler/IDE are you using? That would help us to tell you where the input file should be located. Are you running this from the IDE or directly in a command window?
Forum: C++ 16 Days Ago
Replies: 1
Views: 139
Posted By vmanes
Long time ago I used this article (http://msdn.microsoft.com/en-us/magazine/dvdarchive/cc301454.aspx)as a reference to do such.

Unfortunately, it seems the supporting code is not available at...
Forum: C++ 17 Days Ago
Replies: 1
Views: 204
Posted By vmanes
Here's your code, translated in to C++.

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


void READFile(char* filename)
{
int num;
Forum: C++ 17 Days Ago
Replies: 3
Views: 279
Posted By vmanes
And your question is?
Forum: C++ 17 Days Ago
Replies: 4
Views: 175
Posted By vmanes
Read the problem thoroughly. List what you know, what's to be input, what you're to do with it.

Then start listing the steps to accomplish the task. Voila, you're done.
Forum: C++ 17 Days Ago
Replies: 4
Views: 271
Posted By vmanes
RTE, I think you're reading too much into this. The airline reservation/seating problem is a common assignment in beginning programming course, as evidenced by the many times it's come up here.
Forum: C++ 17 Days Ago
Replies: 4
Views: 271
Posted By vmanes
Read the full assignment. It should all be there.
Forum: C++ 17 Days Ago
Replies: 2
Views: 165
Posted By vmanes
You could pass the username and password arrays (or the single array of user objects when you make a class) to the checkDetails( ) function. That way you don't have the arrays in global space...
Forum: C++ 17 Days Ago
Replies: 4
Views: 175
Posted By vmanes
Yes, you could use a loop to print only up to 22 characters. Be sure to first test the length of the actual string content, and limit your loop to 22 or the string length, whichever is less.
Forum: C++ 18 Days Ago
Replies: 3
Views: 162
Posted By vmanes
So, your function must:
1. Display the menu. What are the options in this program?

2. Ask the user to make a selection from the options available. Usually you will take this in as either a...
Forum: C++ 18 Days Ago
Replies: 4
Views: 175
Posted By vmanes
I think a better approach would be just use getline to grab all of a line into a large string, then print out the first 22 characters that appear (or less if the line's not that long.)

You can...
Forum: C++ 19 Days Ago
Replies: 1
Views: 151
Posted By vmanes
Please use this big white space to ask a question. If you read the sticky threads at top, you'll find useful information on how to ask questions here.

It looks like you're writing in C, this is...
Forum: C++ 19 Days Ago
Replies: 3
Views: 288
Posted By vmanes
Please read the sticky threads about how to ask questions.
Mainly, please put your code inside code tags so it will be more readable, like

your code goes here


Big problem with your second...
Forum: C++ 20 Days Ago
Replies: 5
Views: 378
Posted By vmanes
For your array, if the problem is given as a set size, just declare a local array, as you show int plate[10][10]; for example.

If no specific info is given for initial state of interior nodes,...
Forum: C++ 21 Days Ago
Replies: 5
Views: 199
Posted By vmanes
YES, that was a typo
Should read
for( c = 0; c < 5; c++ )

(walks away with embarrassed look)
Forum: C++ 21 Days Ago
Replies: 5
Views: 378
Posted By vmanes
What I believe the problem is asking you to do is set up the 2D array.

Read in the temperatures along the edges (is the temperature the same all along an edge or does it vary along the edge,...
Forum: C++ 21 Days Ago
Replies: 5
Views: 199
Posted By vmanes
Is your array declared as 5 columns or as 6? It makes a difference in the indexing you use.
Are you using the row index as the student ID? I don't see input for IDs.

Remember that the maximum...
Forum: C++ 21 Days Ago
Replies: 2
Views: 200
Posted By vmanes
Well, I think an elegant solution would be a loop that iterates from -4 to +4, inclusive. Within that loop is another that uses the absolute value of the loop counter to print out the numbers and...
Forum: C++ 22 Days Ago
Replies: 3
Views: 218
Posted By vmanes
Why are you doing two input actions in the loop?
The first, in the while condition, reads the word and stops at the newline. The getline will read and discard the newline, storing an empty string to...
Forum: C++ 22 Days Ago
Replies: 3
Views: 273
Posted By vmanes
Sure you could modify during runtime. And make allowance to store the parity bit(s) as well.

Say you want to store a byte, plus a parity bit. Allocate an array of 9 char's (unsigned, if you want,...
Forum: C++ 22 Days Ago
Replies: 3
Views: 273
Posted By vmanes
Depends on how easy you want to access the bits, and how you get the data.
You could store the data as an unsigned char, and access each bit using masks. That easily handles single bytes.

You...
Forum: C++ 22 Days Ago
Replies: 6
Views: 459
Posted By vmanes
I'll write that code for $25,000

How low can the bidding go?

Maybe this should move to Geeks' Lounge?
Forum: C++ 22 Days Ago
Replies: 2
Views: 257
Posted By vmanes
Please read the sticky threads about using this forum, it'll make your time here more productive.

Mainly, be sure to put your code inside code tags, like

your code goes here

This will make...
Forum: VB.NET 23 Days Ago
Replies: 2
Views: 184
Posted By vmanes
The error is due to the way floating point values are stored. Single precision, which it looks like you used, is only good to about 7 digits. Double precision will get you 15 digits. It's best to...
Forum: C++ 23 Days Ago
Replies: 4
Views: 4,054
Posted By vmanes
A. You are responding to a three year old post
B. You are hijacking that thread with a new problem
C. You are asking for a solution to a problem you have not attempted to solve on your own
D. This...
Forum: C++ 23 Days Ago
Replies: 13
Views: 369
Posted By vmanes
makeChange.quarters = static_cast<int>(remainingMoney * 4);
remainingMoney = money - ( quarters * .25);
Forum: C++ 23 Days Ago
Replies: 3
Views: 165
Posted By vmanes
I think it has to do with the declarations of the items

Product milk = Product( "Milk", 7 , "Lot's of calcium");


Left side of the assignment operator creates the object. Right side of the...
Forum: C++ 23 Days Ago
Replies: 13
Views: 369
Posted By vmanes
You're welcome.

Now go back and read my first reply again, relating to the calculation of remaininMoney.

You have $1.78. Your code correctly stores 1 dollar, and subtracts 1.00 from the total,...
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