please wait
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by DumbGuy
c++ find duplicate strings in vector and print all occurrence of them
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| So i'm looking for a soultion to print duplicate strings in a vector. If the vector contains {a,b,c,a,d,a,a} i want to print each "a" out of the vector. For the... |
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Jan 31, 2021 at 7:11pm
[12 replies] Last: Based on this statement: Loop over the given array of strings to buil... (by lastchance)
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by gevCplus
Question regarding primes in array
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| Hello all, I am trying to spot all the prime numbers within an array however my code, apart from the prime numbers it gives me an some non-prime numbers as w... |
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Jan 31, 2021 at 4:12pm
[6 replies] Last: if you are checking for small values (I see a %10 in there!) you can g... (by jonnin)
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| about dynamic_cast |
| When I delete the body content of Class B, errors occur on compilation. I tried to replace "virtual void dummy() {}" with " int abc;" and the errors stills pop... |
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Jan 31, 2021 at 3:11pm
[5 replies] Last: > I see a pointer pointing to a base class can also be used to point t... (by ne555)
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by telco
Writing a matrix in text file
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| I am trying to create a new text file and write a matrix value in it using fstream. But i am getting errors with this code. Would anyone please suggest me how ... |
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Jan 31, 2021 at 8:38am
[11 replies] Last: We are (a library is) allowed to create proxy objects and use expressi... (by JLBorges)
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by Willy988
Compiling and running your program
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| I have no idea what I’m doing honestly. Coming from Java, VS code 2019 is new to me. I’ve tried clicking the build button on the ide but when I want to run ... |
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Jan 31, 2021 at 3:36am
[6 replies] Last: all IDE make a bunch of 'intermediate' files, not just an exe. All co... (by jonnin)
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by Shervan360
Copy pointer to pointer in function - C (1,2)
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| Hello, I'd like to copy pointer to pointer in function and I don't want to use the library. But in main I have the old string instead a new string. Thanks... |
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Jan 31, 2021 at 3:04am
[22 replies] Last: > in that regard, > int insert(char*& str1, char* str2, size_t n) > ... (by JLBorges)
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by Mathavan
Only accepting 4 inputs from user
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| Hello guys. I am a beginner in c++. I am trying a coding where user can only enter 4 characters for time1, time2, time3 but its ending up in crash. I couldnt pa... |
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Jan 30, 2021 at 1:49pm
[3 replies] Last: Hello Mathavan, Consider this for you function: int add_movie() //... (by Handy Andy)
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by cpluspython
Trouble converting while loops to for and do loop
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| Hi 2 everyone, I have been working on this for some time now and have been stuck in the same spot. I have figured out how to get the answer I wanted with 2 whil... |
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Jan 30, 2021 at 11:46am
[3 replies] Last: @cpluspython - please don't edit the original post so that future answ... (by seeplus)
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by Feit
How to convert string to long int
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| Hi everyone, I need to declare a vector using string and then convert it to long int. I wrote the following code but it is showing error. string state ... |
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Jan 30, 2021 at 11:26am
[6 replies] Last: @seeplus and @salem, many thanks. Very helpful answers (by Feit)
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by izlezotfilma
Read a whole sentence till i find a specific word
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| hi, i wanne read a sentence that is no more than 100 symbols and when it reads the word stop it ends reading the sentence. char*text; cin.getline(tex... |
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Jan 30, 2021 at 10:52am
[4 replies] Last: Consider: #include <iostream> #include <iomanip> #include <cstring> ... (by seeplus)
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by lost110
Conditional wait and signal in multi-threading
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| Hye! I saw this code on geeks for geeks. But I am not able to fully get it. // C program to implement cond(), signal() // and wait() functions #inc... |
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Jan 30, 2021 at 7:40am
[2 replies] Last: t1: created and starts running foo main: sleeps for 1 second to ensure... (by lost110)
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by Ch1156
Correct use of this pointer (1,2)
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| I was following along with a youtube video on how to do some OOP stuff like inheritance and all that, and I was wondering if this is the correct use of the this... |
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Jan 30, 2021 at 5:28am
[31 replies] Last: Excellent. Another aspect to throw into the melting pot is UML and cla... (by againtry)
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by heart1210
Cicle Class Project
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| Hello, I am hoping someone can tell me why I am getting this error in my code. Code is for an assignment Instructions Below: "Construct a class named Circle ... |
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Jan 30, 2021 at 3:38am
[3 replies] Last: Doing console input correctly when you want to flag non-numeric and ce... (by deleted account xyzzy)
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by kmce
Class inheritance problem
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| I am creating a small program to practice inheritance etc and I am having a issue that I can not figure out. I have an engine class which I can create with its ... |
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Jan 30, 2021 at 12:31am
[2 replies] Last: Oh of course, that was stupid of me. thank you (by kmce)
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| Won't do the right thing. |
| Please look through my code. Its to long to post here: https://ashtonfroude.wixsite.com/mysite-3/post/help-needed Idk what can be the matter with it. Its not do... |
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Jan 29, 2021 at 11:40pm
[11 replies] Last: If you're going to link code externally, please just use something sim... (by Ganado)
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by StaveDrider
Varied Amount of input data
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| Currently working on a lab that requires me to make a program that takes any number of non-negative integers as input, and outputs the maximum value and average... |
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Jan 29, 2021 at 9:30pm
[4 replies] Last: max = input worked, thank you! (by StaveDrider)
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by lost110
Confusing question regarding semaphores and threads
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| I am not able to understand this dependency diagram because there are no arrows in it! Whether thread A should execute first, release thread B and either B rele... |
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Jan 29, 2021 at 6:22pm
[1 reply] : I'd say the first place to start is here https://docs.microsoft.com/en... (by markyrocks)
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by chebyrek
There is a problem reading the file.
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| I completely enter the file address for the code test. But ''else'' is constantly executed. What could be the problem? The test file and the code itself with th... |
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Jan 29, 2021 at 6:10pm
[6 replies] Last: Oh right, cin >> char_array would add the null terminator already. Tha... (by Ganado)
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by abrock
Documentation of std::nth_element
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| Hi, I'm using std::nth_element on vectors, some of them are pre-sorted and some are not. I found that my code implicitly assumes that vectors which are alrea... |
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Jan 29, 2021 at 2:10pm
[2 replies] Last: Which description from where? If for the cplusplus.com site, then pro... (by seeplus)
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by hako2002
ofstream - unable to write onto next time line
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| Am i doing it right? I am still really noob at this. Everytime i run the code, only a line of text will be saved on the txt file. #include <iostream> #in... |
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Jan 28, 2021 at 5:19pm
[3 replies] Last: Open the file in append mode: ofstream projectFile("projectfile.txt... (by seeplus)
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