/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

5 votes297 views1 answer
All library in c++
C++
1 vote305 views1 answer
Check if intent has extras
C++
0 vote307 views1 answer
Switch cout print with a prameter c++
C++
9 votes280 views3 answers
String iterator in c++
C++
0 vote280 views1 answer
How can I delete a substring from a string in c++?
C++
23 votes280 views2 answers
What is c++ function
C++
0 vote309 views1 answer
Can derived class access base class non-static members without object of the base class
C++
1 vote340 views1 answer
C++ std::copy to cout
C++
1 vote295 views4 answers
Sum vector c++
C++
1 vote281 views1 answer
Cuda dim3
C++