Beginners - C++ Forum - January 2020 (Page 6)

I have this array program, I need some help with reading in. Per instruction my program should handle up to 100 numbers. But there are 80 in the file( I have to...

[32 replies] Last: The second block of code above looks right, assuming counter is size o... (by jonnin)

by Usama911

I can't find what's wrong

#include <iostream> using namespace std; void welstudent() { cout << "Welcome to University Dear Students"<<endl; } int calfee(int nofc); int calgpa(int gp...

[4 replies] Last: Hello Usama911, The beginning of the program now looks like this: #... (by Handy Andy)

by newGrl

remove duplicates and shift to left

Hello, I'm working on a program for school and I'm a bit stuck. I read through a bunch of similar posts and couldn't find the answer. I'm not sure what I'm do...

[3 replies] Last: One could cheat^H^H^H use the "easy way" and implement the remove with... (by keskiverto)

by ema897

putback line

is there a method to put back line after a getline(file, line), like putback(char)? I mean, I want to read 2 times the same line. first time to check if las...

[5 replies] Last: > I still don't think you need to read any line from the file twice. ... (by JLBorges)

by binaary

validating different input types

Currently writing a switch menu system and I'm looking into validating each input that the user enters against its datatype: char, string, int, double, float...

[3 replies] Last: infatuating (by againtry)

by bsmith

How to count a new line

I am writing a program for a class in which I need to scan a text document for a word, insert the word into an array, then later organize the array alphabetical...

[2 replies] Last: I am writing a program for a class in which I need to scan a text doc... (by Enoizat)

by bsmith

cstrings and how to use them question

Hello all. I'm working on a project for a beginner c++ class. I'm tasked with taking a text file, finding each unique word, and outputting those words in ASCII ...

[5 replies] Last: How do I extract just one word from a cstring array?? You don't need... (by jonnin)

by darlock

get pixel color values from image.png

1. how can i link to an image that's on desktop? write a path to it or include it into my project somehow? 2. how to get rgb values from a pixel of that image...

[4 replies] Last: thanks, i know really basics of c++ and made some game prototypes with... (by darlock)

by TheToaster

std::move for pointer?

I came across some strange code while reading a textbook (C++ Templates: The Complete Guide 2e) today that doesn't exactly make sense to me. template<ty...

[5 replies] Last: So the initializer list constructor would make a copy anyway? Then w... (by mbozzi)

by ema897

segmention fault with pointers (1,2)

I received error for bad practice with pointers: that's my code class Component { public: Component(); virtual ~Component(); void logicFun...

[26 replies] Last: Clones -> http://www.cplusplus.com/forum/beginner/267366/ (by salem c)

by nonso

error

I have again the problem. Please, help me. Component.h #include <stdlib.h> #include <vector> #include <string> #include <fstream> #include <string.h>...

[11 replies] Last: Like I said, fix all these things before trying to run the code. $ g... (by salem c)

by HS05669

Reverse Diagnal of matrices

Write a C++ program that inputs a square matrix and reverse the contents of its diagonal values. Example {1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16} o...

[2 replies] Last: All good programs start with a plan, maybe circle the elements, maybe ... (by againtry)

by bigskit13

function call trouble

I'm prepping for class. Brand new to this. Trying to do a basic fucntion decleration, function call, and function definition. program is suppose to enter a p...

[6 replies] Last: Well done for finding it through your own efforts and not just copying... (by againtry)

by benhyphen

Wondering what kind of data structure to use for a project (1,2)

Hello, I am getting back into programming after many years off the grid. I am a cook and I want to make a program that stores and retrieves food pairings. ...

[25 replies] Last: I think I should make more typos Perhaps not. The siren was for Coo... (by againtry)

by ema897

minimum and maximum path

Hi! I have an oriented graph made with class myClass{ public: myClass* left(){return a;} myClass* right(){return b;} protected: private: myC...

[2 replies] Last: Sorry, but I don't understand how to adapt the code to mine (by ema897)

by yabi2943993

input problem

I want to take iser input of two numbers sepperated by a "/"

[2 replies] Last: yabi, DO NOT delete your posts. It is solved for you, but not for any... (by George P)

by johny15

Repeating methods

Guys i have question how i can start methods from beginning once again when 1 variable gets value of true. For example I have 4 methods in main like this: ...

[1 reply] : Use a loop . http://www.cplusplus.com/doc/tutorial/control/ You need... (by Ganado)

by lekfanda

Confusion about static

Hi, I'm gonna keep it short and straightforward because I'm sure I'm missing something really obvious and also I have plenty of more advanced stuff to learn bu...

[6 replies] Last: Yea I get it now, all I needed was some sleep haha, thanks for the ans... (by lekfanda)

by abs361

Type Conversion issue

Hello. I am trying to write a polynomial class that will implement basic polynomial addition, subtraction, and multiplication using input from the user. Right n...

[4 replies] Last: Maybe reconsider the name of the parameter in Polynomial& Polynomial... (by mbozzi)

by ema897

file reading

If have a line: (.a=m, .b=x,.c=o) how to extract each token ignoring space, not knowing how long is the line? Moreover, I have to check if there are stra...

[1 reply] : See: http://www.cplusplus.com/reference/cstring/strtok/?kw=strtok The... (by againtry)

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Beginners - January 2020 (Page 6)