Static arrays are initialized to zero. : array « Array « C++ Tutorial

1. C++ Tutorial
2. Array
3. array

#include <iostream>
using std::cout;
using std::endl;

void staticArrayInit( void );
void automaticArrayInit( void );

int main()
{
   staticArrayInit();
   automaticArrayInit();

   staticArrayInit();
   automaticArrayInit();
   return 0;
}

void staticArrayInit( void )
{
   static int array1[ 3 ];

   for ( int i = 0; i < 3; i++ )
      cout << "array1[" << i << "] = " << array1[ i ] << "  ";

   for ( int j = 0; j < 3; j++ )
      array1[ j ] = 0;
}

void automaticArrayInit( void )
{
   int array2[ 3 ] = { 1, 2, 3 };

   for ( int i = 0; i < 3; i++ )
      cout << "array2[" << i << "] = " << array2[ i ] << "  ";

   for ( int j = 0; j < 3; j++ )
      array2[ j ] = 0;
}

array1[0] = 0  array1[1] = 0  array1[2] = 0  array2[0] = 1  array2[1] = 2  array
2[2] = 3  array1[0] = 0  array1[1] = 0  array1[2] = 0  array2[0] = 1  array2[1]
= 2  array2[2] = 3