how to initialize whole array to 0 in c++ code example

Example 1: initialize dynamic array c++ to 0

int *arrayName = new int[10]{0}; 
//Print array elements
for(int i=0; i<10; i++ { cout<<arrayName[i] <<" "; }

Example 2: initialize whole array to 0 c++

int nScores[100] = {0};

Example 3: c++ initialise array

int nCount[] = {1, 2, 3, 4, 5};

Example 4: c++ initialize array

int arr[3] = {1, 5, 4};