/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 vote90 views1 answer
C++ triangle
C++
0 vote95 views2 answers
What is ++i and i++
C++
0 vote109 views5 answers
Asd
C++
2 votes100 views1 answer
Binary search return index c++
C++
0 vote106 views1 answer
Life the universe and everything solution c++
C++
0 vote90 views1 answer
Fname from FString
C++
4 votes101 views3 answers
GCD in cpp
C++
9 votes89 views3 answers
String iterator in c++
C++
0 vote100 views1 answer
Nested conditional operator
C++
0 vote100 views1 answer
C++ pause linux
C++