int times(int searchNum, int arr[], int length) // length 是数组元素个数，searchNum是要查找的值
{
        int num = (arr[length - 1] == searchNum)  ? 1 : 0;
 
 
        if(length > 0)
        {
                return num + times(searchNum, arr, length - 1);
 
        }
        return 0;
}
//或
int get_count( int array[] , int length , int num ){
        if( length )
                return (num==*array) + get_count( ++array , --length , num);
        return 0;
}