int b = 033;//表示十进制数27,3 × 81 + 3 × 80 = 3 × 8 + 3 × 1 = 24 + 3 = 27
int c = 0x33;//表示十进制数51,3 ×161 + 3 × 160 = 3 × 16 + 3 × 1 = 48 + 3 = 51
int d = 0X33;//表示十进制数51