Create dynamic array c++

How to dynamically allocate an array c++

int* a = NULL;   // Pointer to int, initialize to nothing.
int n;           // Size needed for array
cin >> n;        // Read in the size
a = new int[n];  // Allocate n ints and save ptr in a.
for (int i=0; i<n; i++) {
    a[i] = 0;    // Initialize all elements to zero.
}
. . .  // Use a as a normal array
delete [] a;  // When done, free memory pointed to by a.
a = NULL;     // Clear a to prevent using invalid memory reference.

Source: fredosaurus.com

C++ allocate dynamic with initial values

int length = 50;
int *array = new int[length]();
// returns 50 length array of 0

Similar codes

0 vote326 views1 answer
Temporary file using MSFT API in cpp
C++
5 votes337 views2 answers
String c++ if letter is lowercase
C++
12 votes309 views3 answers
C++ vector size
C++
0 vote338 views1 answer
Ue4 c++ string from fvector
C++
2 votes294 views1 answer
Allocation an array with new cpp
C++
0 vote310 views1 answer
130 divided by -10
C++
5 votes291 views2 answers
Sleep c++ windows
C++
36 votes312 views4 answers
C++ hello world program
C++
4 votes320 views3 answers
Check lowercase letters c++
C++
0 vote316 views1 answer
Sento freddo a un dente
C++