#include <stdio.h>

int isumRec( int* ints, int numInts ) {
  if ( numInts <= 0 ) {
    return 0;
  } else {
    return ints[ 0 ] + isumRec( ints + 1, numInts - 1 );
  }
}

int main() {
  int ints[] = { 1, 2, 3, 4 };
  printf( "%i\n", isumRec( ints, 4 ) );
  return 0;
}