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Beginners - January 2018 (Page 18)

Hello. My problem is that I have to implement a sorting algorithm by merging with text files, in the input file (to be sorted) each number is on a separate line...

[no replies]

by DarkChemical

System call with multiple variables

Hello, I'm trying to make a system call using values from external file. Using mostly C not C++ because using the code on RB PI, with Arduino shield for other p...

[no replies]

by zingob

problem with typedef

Hi there, in a simple test program I am using typedef to keep things simple, but when I replace the typedef names with the longer original declaration I get err...

[2 replies] Last: hello helios.. thanks! wow what a mistake.. ahah.. After I wrote the ... (by zingob)

by Hassibayub

Reading from a file.

Hey everyone, I'm working on a project where student issues a book. when withdrawing a book he gives data that contains his name, ID, department name ...

[5 replies] Last: @Handy Andy Thank you for opening a path for... (by Hassibayub)

by adlice8700

use of while loop with flag control varible

this piece of code is running infinty. i am not able to get why is this happening. //flag controlled while loop //number guessing game #include<iostream> #in...

[6 replies] Last: thanks. (by adlice8700)

by icybarrage

Problem with showing net salary

Pretty much trying to figure out the net salary but it wont show when i try to enter number.. Example: enter basic pay: 35050 net sal: #include<iostrea...

[1 reply] : I am assuming the variable net is the net salary. If so, then line 3... (by chicofeo)

by HenrikAET

Insecure array size!

Why does ARRAY_SIZE work only in 'main' and not in 'printarray'? #include <iostream> #define ARRAY_SIZE(array) ((sizeof(array))/sizeof(array )) //array s...

[2 replies] Last: To clarify, the word usually used is that an array decays in to a po... (by Ganado)

by flav32

program effciency

Hi there:) I had to create an array that can hold ten integers, and get input from user. Then I had to ask the user for an integer, search for that integer and ...

[7 replies] Last: If you have something new to say, there's no harm in creating another ... (by mbozzi)

by PeterHicks

Which symbols is the "unresolved external symbol"?

I'm working on a program to take in an object with a name(string) and a number(double),put them into an array of objects, sort the objects by the number, and th...

[9 replies] Last: Hi, can you show your new code? Edit: Look in the tutorial top Left ... (by TheIdeasMan)

by parinaz mellatdoust

getting a 2d array with pointer

I'm new to using pointers and I have a problem. I must get a 2D array of characters from the user and the user is giving me the number of rows and columns and w...

[1 reply] : I must get a 2D array of characters from the user Then why do you ... (by Chervil)

by flav32

position of lowest and highest values of array

I have to find the position of the lowest and highest values of an array.The array starts at 0.For example: INPUT:5 8 7 9 2 5 OUTPUT: 4 3 #includ...

[4 replies] Last: omg I can't believe I missed that! Thank you so much!!! (by flav32)

by jessicax1028

Undefined reference to operator >>

Hi everyone, Im writing 2 classes. I have tested class Person. It is fine. Then I write class Company which use Person as part of it. But Im encountering on ...

[1 reply] : Oh silly me! I define operator<<(std::ostream&, Person const&) in my ... (by jessicax1028)

by dimitar425

Runtime polymorphism

I'm trying to achieve run time polymorphism however i am not quite sure how it's done. Is the code example down a good way to do it or not? Will using it become...

[8 replies] Last: [quote=globaltourist]why is it considered dynamic polymorphism if the ... (by Cubbi)

by imren

how to write the avreage velocity to the screen.

A file called speed.txt contains 9 time (h) vs speed (km/h) measurements of a car.Write a program to read data into a arrays and output the avreage velocity t...

[6 replies] Last: thank you so much (by imren)

by danpbrown1973

Random Number/ variables

I dont have any code yet, just a general question. I'm working on an assignment that will generate random numbers, then do things like doubling that number, rev...

[5 replies] Last: substr gives you a string . If you want a char you can use the subscr... (by Peter87)

by adlice8700

warning: left shift count >= width of type

I am getting this error whenever i am trying to compile the program. #include<iostream> using namespace std; void printstars(int blanks,int starsinline);...

[6 replies] Last: thanks to all of you,for helpint me. (by adlice8700)

by danpbrown1973

AM PM Military time

Ive been working on this for hours now, have around a million errors, was hoping for some pointers. The problem is "Write a program to convert the time from 24-...

[7 replies] Last: I'm starting to understand the true value of pseudocode. Thanks, dhayd... (by danpbrown1973)

by umayr

If statement issue

Hello, I am trying to make a little program where you have to guess the number the computer is thinking of. However, at the if statement it showing me an error,...

[2 replies] Last: Thanks a ton man! (by umayr)

by imren

class question helping please!

In the x-y plane, the general equation of a circle of radius r is given by: (x - a)2 + (y - b)2 = r2. Implement a Circle class. Each object of this class will ...

[1 reply] : Look at sum: (x - a)2 + (y - b)2 The point (a,b) is the center of a ... (by keskiverto)

by ineedastupidusername

order of yaw pitch roll

I have a 3d camera in a 3d world where I have ability to rotate a point about an arbitrary line. So I guess I want to give the camera a default center position ...

[4 replies] Last: I think if you fudge to skip the anomaly (just insert if blah == 0 the... (by jonnin)

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