Platform: Linux GCC
Question:
unsigned int test_bits_1 = 0x00000001;
printf("test_bits_1 = 0x00000001, test_bits_1 << 32 = %X\n",
test_bits_1 << 32);
printf("0x01 << 32 = %X\n", 0x01 << 32);
輸出結果
test_bits_1 = 0x00000001, test_bits_1 << 32 = 1
0x01 << 32 = 0
請問問題出在哪裡？
我以為結果test_bits_1 << 32 = 0
程式碼(Code)：
unsigned int test_bits_1 = 0x00000001;
printf("test_bits_1 = 0x00000001, test_bits_1 << 32 = %X\n",
test_bits_1 << 32);
printf("0x01 << 32 = %X\n", 0x01 << 32);

undefined behavior when sizeof(int) = 4

請問樓上的意思是說當type為int（4個bytes)會這樣嗎？請問樓上可以提供造成這樣結果的資料來源嗎？我已經找到答案了，感謝樓上suhorng的提醒