I wanna create a program that can do these thingsTake input from user (say int value)Store it in an array without starting sizeUse the information of array for whatever purposesI'm asking for help so that I can knowHow to make a dynamic array without a set size?How can I use/access/reach the elements in the above array?Sorry if the question is very beginner but yes, let me know the answer.

How to make an array with a dynamic size General usage of dynamic arrays maybe pointers too

I wanna create a program that can do these things

Take input from user (say int value)
Store it in an array without starting size
Use the information of array for whatever purposes

I'm asking for help so that I can know

How to make a dynamic array without a set size?
How can I use/access/reach the elements in the above array?

Sorry if the question is very beginner but yes, let me know the answer.

Aug 5, 2022 in C++ by krishna
• 2,820 points • 959 views

No answer to this question. Be the first to respond.

Your answer

Your name to display (optional):

Email me at this address if my answer is selected or commented on:

Privacy: Your email address will only be used for sending these notifications.

How to create a dynamic array of integers

How can I use the new keyword ...READ MORE

Jul 15, 2022 in C++ by Nicholas
• 7,760 points • 403 views

0 votes

0 answers

How to declare an array of strings in C++?

I am trying to iterate over all ...READ MORE

Jul 26, 2022 in C++ by Nicholas
• 7,760 points • 556 views

0 votes

0 answers

How to initialize an std::string with a length?

How can I correctly initialise a string if its length is specified at build time? #include <string> int length = 3; string word[length]; //invalid ...READ MORE

Jul 27, 2022 in C++ by Nicholas
• 7,760 points • 1,219 views

0 votes

1 answer

How to use std::sort to sort an array in C++

We receive std::begin and std::end in C++0x/11, which are overloaded for arrays: #include <algorithm> int main(){ int v[2000]; ...READ MORE

answered Jun 1, 2022 in C++ by Damon
• 4,960 points • 1,147 views

0 votes

1 answer

How do i apply lower_bound to a range of unsorted vector elements?

What's the point of sorting your array? ...READ MORE

answered Jun 15, 2022 in C++ by Damon
• 4,960 points • 1,778 views

0 votes

1 answer

Is there an easy way to make a min heap in C++?

Use make heap() and its buddies from algorithm>, or priority queue from queue>. Make heap and friends are used by priority queue. #include <queue> // functional,iostream,ctime,cstdlib using namespace std; int main(int ...READ MORE

answered Jun 27, 2022 in C++ by Damon
• 4,960 points • 1,036 views

0 votes

0 answers

Simple C++ swap function

Why is it that if I have a method like this to swap two numbers, it doesn't work[swap], (I know I can accomplish this by defining pointers in the prototype and then passing the addresses of the relevant variables in main()), yet it works for arrays without having to supply pointers and addresses? It does not work. void num_exchange(int m, int n); int main(){ int num1 ...READ MORE