用C跳过字节0读取二进制文件

当我读取二进制文件时，程序会跳过等于 0 的字节。我的程序在 C 中：

int main(int argc, char const *argv[])
{
        FILE * input_file = fopen("binary.bin", "rb");
        uint32_t b = 0 ;
        fread(&b, sizeof(uint32_t) , 1 , input_file);

        printf("----- Here are the data stored in the file -----\n");
        printf("First uint_32 : %d\n", b);
        printf("------------------------------------------------\n");

    return 0;
}

输出 ：

----- Here are the data stored in the file ----- 
First uint_32 : 16777216 
------------------------------------------------

二进制文件：

xxd -b binary.bin
00000000: 00000000 00000000 00000000 00000001 00000000 00000000  ......
00000006: 00000000 00110010 00000000 00000000 00000000 01100100  .2...d
0000000c: 00000000 00000000 00000000 00010100 00000000 00000000  ......
00000012: 00000000 00000000 00000000 00000000 01011001 00110000  ....Y0

为什么输出不是 1 ？