What does the following program do? Explain it and print the screen-shot.

Question

#include <iostream>
using namespace std;
int whatIsThis( int [ ], int ); // function prototype
int main( ) {
const int arraySize = 10;
int a[ arraySize ] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
int result = whatIsThis( a, arraySize );
cout << "Result is " << result << endl;
return 0; } // end main
// What does this function do?
int whatIsThis( int b[], int size )
{
if ( size == 1 ) // base case
return b[ 0 ];
else // recursive step
return b[ size - 1 ] + whatIsThis( b, size - 1 );
} // end function whatIsThis

Answer 1

The function returns the sum of all the elements in an array by recursively adding elements together.