Beginners - C++ Forum - June 2020 (Page 9)

There are no errors that I can see or noted in this program but for some reason the for loop doesn't run. #include <iostream> #include <iomanip> int m...

[5 replies] Last: @Ganado, Strange it compiled for me when I wrote it, more to the poin... (by Handy Andy)

by hekanayake

main.cpp:47:55: error: lvalue required as left operand of assignment

Write your question here. Need to compare the sales value of two sales teams in a company. Then need to assign a score by comparing those to figures monthly....

[5 replies] Last: Hello hekanayake, Based on above i assign values to two arrays .... (by Handy Andy)

by rozick1

Am I unit testing correctly?

Hi I am currently writing some unit tests for a library which I've written. As an example, say I'm testing a particular a method called doSomething() then my t...

[3 replies] Last: Find the happy medium that gets you to where the error is found. O... (by jonnin)

by chumbucket

Reading Specific Record from a Data File

hi everyone, I am trying to read a specific record from a file. The "nutri.dat" was written by using a class that iterated to write the user input. Now ...

[3 replies] Last: Also read this -> https://www.cplusplus.com/articles/jEywvCM9/ You att... (by salem c)

by Theloneinteger

Trouble with a random number generator

Hello there, I've been working on a program in which a certain item from an 84 characters long array, (let's call it v ), gets picked in a random way using a fu...

[2 replies] Last: Thanks, now the program is working, the issue laid in srand() not bein... (by Theloneinteger)

by stoneJax

Two Dimensional Vectors

I just learned about two a dimensional vector, and filled it with the 12 times table as an exercise to practice with. I got it to work. However, I am curious if...

[7 replies] Last: I appreciate everyone's examples. Definitely much more efficient. kes... (by stoneJax)

by vitera148

Lottery Code - C++ - Matrix and Vectors

Hello people! I am making a code in C ++ that simulates a lottery, the user enters 6 whole numbers, the code shows the numbers in a 6x10 matrix, performs the...

[1 reply] : #include <iostream> #include <iomanip> #include <set> #include <algo... (by dutch)

by mermaidly

Replacing a word in a text using loop

Hello, How do you replace every "dicktionary" word in a text with "dictionary" using loop? Original text: I love my dicktionary . A dicktionary helps me to...

[7 replies] Last: One does not need to search the already processed text repeatedly: ... (by keskiverto)

by jeraya6

simple max prime problem

Hello there. i have this part of a program that i'm wrting. it's working but it's not giving correct answers. i need to find max prime number of all entered num...

[11 replies] Last: Given that in your code flag is only 0 or 1, this else if (flag == ... (by Repeater)

by rock33

can't print the variable in vector

Hello, I am in the first data structure (hash table) I insert the data, each filled cell is connected to a disjoint set precisely in the other class. the prob...

[6 replies] Last: this is open adressing hash table, double hash and disjoint set is a r... (by rock33)

by ywsoliman

Two Players Card Game

Two players are playing a card game. Each card consists of a rank (from 1 to 13) and a suit (S, H, C, or D). For any two cards, the card with a higher rank is c...

[3 replies] Last: #include <iostream> enum suit { diamond, club, heart, spade }; enum ... (by againtry)

by LegalWeasel

Imprecise Averages

I'm trying to get the code here to be more precise, down to at least the second decimal but I don't know-how. #include <iostream> #include <iomanip> i...

[2 replies] Last: You're entering doubles but storing sum as an int. Change line 8 to ... (by dhayden)

by tuanle007

poor pointer hygiene example

"USING UNITIALIZED MEMORY 'isSunny" how do I fix this line 23 to make this example run? this is an example from the book. thank you // Listing8.1...

[7 replies] Last: You could also move all the pointer work inside the if statement: Bu... (by dhayden)

by dakotad8218

Reversing lines & outputting to text file w/o vectors or arrays

Really stumped here. Basically taking a multiple line text file such as this: Mary had a little lamb Its fleece was white as snow And everywhere that Mar...

[14 replies] Last: I understand that you can't use vectors or arrays. Are you required to... (by dhayden)

by jeraya6

max prime in a 2D array bug

i have this part of a program code, which purpose is to find max prime num in a 2D array. it should work fine.. but for some reason it only checks the first ro...

[3 replies] Last: @Ultralegendary thank you , it worked. i get it now :) (by jeraya6)

by ChesterPlus

Console read out issue

The program is not displaying my cout statements un the second half of my program. What doesn't it work and how can I fix it? This issue starts at line 59. ...

[3 replies] Last: just check whether the crusor is moving after your input or not, text... (by Ultralegendary)

by bld

A quick-start guide for C++?

Hello, I'm very new to C++ and I was wondering if there's some sort of a quick-start guide for total dummies. I'm not looking for something super long, even th...

[3 replies] Last: c++ take a while to learn. There are some short guides but the langua... (by bld)

by ebicw

how would I make a better fight? such as making a certain amount subtract from enemyHealth

Write your question here. int main() { int enemyHealth = 10; int attack = 1; cout << "hit one to attack the enemy!\n"; while (enemyHeal...

[1 reply] : If you were playing with traditional dice... If you allow the occasio... (by salem c)

by mrpear2020

Assigning string values to a 2D array, error

Can someone explain what is wrong with this assignment of string values to a 2D array? I don't get it. #include <iostream> #include <set> #include <st...

[2 replies] Last: Thanks! (by mrpear2020)

by Utku

Get instance of class from another class

Hello. I have a question about getting the constructed object that is created in main() function from another class. class A { int a; public...

[6 replies] Last: Thank you dhayden. I tried the function and it works. There is no need... (by Utku)

C++

Forum

Beginners - June 2020 (Page 9)