How can I store and/or print() a number that is larger than 4 294 967 295 in C? is int64_t or u_int64_t what I need ? if, so how can I printf it to stdout?
Can anyone tell me how to refresh the content of a FILE *, so that without reopening you can read its modyfied contents? I was adviced to make the FILE * unbuffered, so I did using setvbuff(),...