bit manipulation - How to do a bitwise operation on some data in C? -

i have following code snippet in c function

int i; (i = bytes; i>0; --i) {     printf("byte: %d", data & 0xff);     data>>= 8; } 

to split given data bytes in big endian way (bytes number bytes in data). data - int or 100 byte long character string. however, if data not int, code won't work (invalid operands binary x).

for example, assuming data string content hello world expect following numbers:

byte: 104 byte: 101 byte: 108 byte: 108 byte: 111 byte: 32 byte: 119 byte: 111 byte: 114 byte: 108 byte: 100 

i need simple solution wotk in pure c without libraries besides standard ones.

if want print bytes of raw binary data:

void print_bytes(const void *data, size_t len) {     const unsigned char *p = data;     (size_t = 0; < len; i++)         printf("%d ", p[i]); } 

you can call address of object, this:

unsigned long long u = 1234567890; print_bytes(&u, sizeof u); // beware of endianness!  const char *s = "hello world"; print_bytes(s, strlen(s));