/C++/How to initialize array with new in c++

How to initialize array with new in 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

Similar codes

0 vote227 views1 answer
Pascal triangle using c++
C++
0 vote179 views1 answer
Freeing array in c++
C++
2 votes172 views2 answers
What is typedef
C++
1 vote176 views1 answer
How to fix class friendship errors in c++
C++
0 vote196 views1 answer
Nike
C++
1 vote166 views1 answer
C++ logger class example
C++
-1 vote157 views1 answer
How to array in c++
C++
3 votes189 views1 answer
Max three values c++
C++
7 votes169 views2 answers
Round function in c++
C++
0 vote207 views1 answer
How to signify esc key in cpp
C++