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Beginners - September 2019 (Page 12)

How to go about organizing my C++ files?

hi guys, c++ beginner here. I'm reading 'Programming: Principles & Practice Using C++' and have just managed to compile and run my first .cpp file from the M...

[7 replies] Last: got it. i will keep that in mind down the road. thank you for your hel... (by mareli)

by AspiretoProg

Help with Understanding Recursion and Functions within other Functions

Hello all, I have recently gotten back into programming after some years away. I'm currently attending classes for Comp Science, and I've read back up on the...

[2 replies] Last: Ahh I see. I should have disregarded the first initial output of Valu... (by AspiretoProg)

by GerryWolff

problem with fscanf

There seems to be something wrong with this: if((fscanf(ifile, "%c", &c)) == NIL) abort_run("Fatal: Unable to read from ifile.\n") ; ifile has...

[13 replies] Last: adding a print to see what the value of c is, I still get the first ch... (by jonnin)

by valiciousx

the output of a simple code

Hi! First, sorry for my english. I start to learn c++ and I have some questions about some code. #include <iostream> using namespace std; int main() ...

[3 replies] Last: if it were j = 1, its easy. you multiply the two... and get 40. but... (by jonnin)

by Netdoggie77

Switch Doesn't Work

When I run my functions menu1(), menu2(), menu3(), and menu4() by themselves they run fine. When I call them in in Switch, menu2() and menu4() don't work. I've ...

[2 replies] Last: You mean they go to the functions but then keeps going without stoppin... (by zapshe)

by codecaine1

C++ Error - Class related

Hey guys just writing simple code to learn how things work with classes. I normally split everything into header files but for the sake of learning I did eve...

[1 reply] : Line 21: class Child: public Parent (by deleted account xyzzy)

by stoneJax

Function Call is Undefined

I have a function that works fine when I created it in main. I moved it to a implementation file, and placed the the prototype in a template class. Now I am get...

[18 replies] Last: I appreciate everyone's input. Definitely helps, thank you. (by stoneJax)

by highwayman

undefined reference to function error

I made a data saving class called SaveStream that just saves variables to a chosen file and labels them so you can retrieve them. The problem is I haven’t eve...

[10 replies] Last: Can I include the .cpp file in the .h file instead of the other way ar... (by highwayman)

by jhartc

making a grid of a vector

I have a vector, let us call it x. I want to make a grid of points between 1 and a variable, let us call the variable xm. How can I make a grid between 1 and ...

[7 replies] Last: #include <iostream> #include <vector> int main() { int nump = 100; ... (by lastchance)

by xoox

Largest digit in four variables inputted by the user

Trying to solve basic programming problem (logic based). finding the largest digit in four variables. i have done the program w/ several inputs but when it co...

[4 replies] Last: he changed other stuff. Read it again. line 9 is your problem descr... (by jonnin)

by SilentXwing

indexOfLowestTemp identifier not returning true index of lowest temp found.

I am developing an Object-oriented program using an UML diagram. The assignment asks to use an array of objects with size 7, and to input data for "weekDay", "h...

[5 replies] Last: In other words: the indexOfHighestTemp reports the correct index is ... (by keskiverto)

by PhysicsIsFun

random numbers - long double

Greetings, another question: I would like to sample random numbers of type long double. Right now, I am drawing double numbers within the interval (a,b) ...

[1 reply] : I'm guessing you want the generated numbers to be long doubles, instea... (by Albatross)

by Avex

Making a grid using nested for-loops

Hello everyone! For a project, I have to make a simple C++ program that makes a grid, but I cannot use arrays for this project; I need to use nested for loops i...

[4 replies] Last: Thank you both for the help! (by Avex)

by euan

Not understanding Compiling faults

I am trying to run this program and do not understand why it will not run. I am getting 'Dog::age' is uninitialized and 'Dog::weight' is uninitialized. thank...

[7 replies] Last: Thanks everyone for the help. (by euan)

by PhysicsIsFun

double vs long double machine accuracy

Greetings guys, I have a question to the machine accuracy of long double. First of all, using cout<< sizeof(long double); I figured out that long doub...

[3 replies] Last: if your compiler lets you get to whatever the largest thing the FPU us... (by jonnin)

by calliefrance

Password and Username

Three Steps To Establish A Concept With Regards To Your Online Printing Projects Thomas Alva Edison was born on february 11th, 1847 in Milan, Ohio, to Sam Edis...

[6 replies] Last: Hey, sorry I couldn't post back on this one as soon as I would have li... (by Duthomhas)

by Eto

Turn hexadecimal strings to decimal integer value

Write a function in C++ that receives a string containing a 32-bit hexadecimal integer. The function must return the string's integer value in decimal form Do...

[7 replies] Last: hex has a direct conversion to binary, so you can digit by digit do a ... (by jonnin)

by Deadweight77

Account Savings using classes

I'm having trouble onto how I can deposit and withdraw money correctly and show the total money in bank account 1. #include <iostream> using namespace st...

[1 reply] : a basic idea void account::deposit(double amount){ this->total_mone... (by ne555)

by hbcpp

Building C++ libraries/Sdk's

I am trying to create a program that takes a local file and upload to a cloud account. So far I have 2 SDK's, from Mediafire and Mega https://github.com/M...

[19 replies] Last: I really thank you @Furry Guy, I am really needing some guidance. I h... (by hbcpp)

by Bopaki

Now I am getting this error when compiling

I guess there is something wrong with the setup in the IDE Compiling single file... -------- - Filename: C:\Documents and Settings\ALISON STUDENT\My Doc...

[2 replies] Last: Some possible causes of trouble. 1. You're already running writebackwa... (by salem c)

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