Function to return the maximum subarray sum
int maxSumSubarray ( vector < int > arr , int size ) { int max_so_far = INT_MIN , max_ending_here = 0 ; for ( int i = 0 ; i < size ; i ++ ) { max_ending_here = max_ending_here + arr [ i ] ; if ( max_so_far < max_ending_here ) max_so_far = max_ending_here ; if ( max_ending_here < 0 ) max_ending_here = 0 ; } return max_so_far ; }