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 vote132 views1 answer
How to make a number always positive in c++
C++
3 votes95 views1 answer
2 dimensional array c++ loop
C++
1 vote169 views1 answer
C++ arrray
C++
-1 vote128 views2 answers
C++ split string by sstream
C++
0 vote140 views1 answer
List in c++
C++
0 vote83 views1 answer
Gtest assert not equal
C++
1 vote135 views1 answer
Qtextedit no line break
C++
0 vote130 views1 answer
How to get the last element of an array in C++ using std::array
C++
0 vote133 views1 answer
Remove a element from an array c++
C++
0 vote151 views1 answer
Play audio c++
C++