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Beginners - January 2018 (Page 6)

Line 10: expression cannot be used as a function #include<stdio.h> #include<string.h> struct Point{ int x; int y; }; int Point_init(struct Point* b...

[2 replies] Last: thx bro,i make a stupid mistake.And ur advice is very useful to me! (by toby1a05)

by soccerplayer21

Implementing Classes into a Program

So I wrote a code for a project and it worked fine, but another part of the project is to implement classes. I've been trying to write a class for the operation...

[3 replies] Last: class mathOperations // class that contains your basic math function... (by fiji885)

by tidematic

Converting between data types? C++

I'm getting an error saying cannot convert char to double. i declared double and int type in the structure. How would I fix this? Im still in the beginning ph...

[2 replies] Last: Helped me out so much, thanks a lot it worked! (by tidematic)

by Hasnain Attarwala

invalid conversion from 'const char*' to 'unsigned int' [-fpermissive]

how do i fix this? //Tests if the C string str starts with the specified prefix, the C string prefix. bool startsWith(const char* str, const char* prefix...

[8 replies] Last: ok, goodness. I think this covers everything except null pointers pa... (by jonnin)

by evdo

doesnt work

"You have to create a class, named Student, representing the student's details, as mentioned above, and store the data of a student. Create setter and getter fu...

[2 replies] Last: Also, you have to create another method to_string() which returns the... (by Thomas1965)

by Lager159

C++ goto replacement

Hello, I am beginner in C++ and I would like to ask you if this is a good replacement for goto or not. //GOTO WAY: int main() { start: cout << "star...

[8 replies] Last: No. Structure your code so that it does not need goto -like construct... (by Duthomhas)

by The hemporer

String array as object params

So, basically, I have a Question object with the constructor Question(string question, string answer1, string answer2, string answer3, string answer4, int cor...

[7 replies] Last: Ah. So my error was because I was instantiating it as a vector rather ... (by The hemporer)

by The hemporer

Using a function in another class

I'm trying to use a function from another class (my Question class) to basically run the game, but it's not allowing me. It just doesn't run it for some reason....

[2 replies] Last: I'm an idiot. Thank you. (by The hemporer)

by foreverjyyy

C++ Quincy beginner code question

I am having a hard time creating a code for this: If TEST score is less than 80, then increase TEST score by 5; else increase TEST score by 7%. This is what I...

[3 replies] Last: To give you an idea... #include <iostream> int main() { const int ... (by chicofeo)

by Tom coder

Importance of storage

I want to know that whether storage is an issue with respect to current hardware and software market?? Because in certain conditions we have to choose between s...

[3 replies] Last: storage is huge on some systems, like mobile devices or embedded compu... (by jonnin)

by YikUTM

Convert string to char. No desired output

I tried to convert strings which are read from external input file into char however I didn't get my desired result... My desired output CS0900001 CS100...

[7 replies] Last: That works. Use that instead! (by jonnin)

by Sigge414

Forward declare objects in C++?

Hi there! I just made this code and I can see why it isn't working but not how to solve it. So I need to forward declare object "toilet" but I don't know. If y...

[9 replies] Last: I will mark this thread as solved now. This is pretty much my final co... (by Sigge414)

by m mohy

where is the error?

I am trying to write a code to calculate the angle between a point on line and another moving point, but there is conversion issue between variable types for ha...

[7 replies] Last: @jonnin It is supposed to calculate the angle between a moving point, ... (by m mohy)

by Rodev

cout string without including <string>?

Hello, I was testing some code and I found out that I didn't need to put "#include <string>" in order to initialize a variable with a string and output it. ...

[9 replies] Last: This change (single-element braced-init-lists initialize directly) was... (by JLBorges)

by LilXeno

Unexplainable Errors

I'm trying to write a code that will find the smaller number between to numbers and print the smaller numbers #include <iomanip> #include <iostream> #i...

[2 replies] Last: You also need to call the function you created after receiving the sec... (by II47II)

by MitchH29

Using user inputs in functions

Im writing a code for class that takes 7 inputs from the user as cards and tells them their best poker hand. The input is #S where # is the card number and S is...

[4 replies] Last: God I'm stupid! Your comment made me think why i used pointers in the ... (by MitchH29)

by YikUTM

Unwanted blank line in output

When I run my program, it printed an unwanted blank line. Is there any way to fix this? The output I wanted david 34 24 ls 45 35 haha 56 23 What I got d...

[3 replies] Last: Your input (underlined) is: david 34 24 ls 45 35 haha 56 23 Note ... (by dhayden)

by indiarose27

Saving data from 2D-array to a text file.

Hi, I have done lots of googling but I have a 2D-array of type double and I want to save it to a file, so I can then plot the data using matplotlib in python,...

[3 replies] Last: Thankyou for this @fiji885 it worked perfectly! @lastchance for this p... (by indiarose27)

by H00G0

Sort algorithm on vector of structures (1,2)

Hello people! I've found a few posts here and there about people having the same problem as me but I couldn't quite make sense of them. Let's say I have s...

[26 replies] Last: Think of threads, parallelism. Two threads execute simultaneously. Yo... (by H00G0)

by foreverjyyy

Beginner C++ question

I have never used C++ before and I need to design a program to do the following: The BONUS on a salesman’s SALES is a. zero if SALES is less than $2000...

[2 replies] Last: int main() { unsigned int sales = 0; std::cout >> "enter sales\... (by Pintujoshi)

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