What is the largest decimal value that can be stored using 1 byte? What is the h

Question

What is the largest decimal value that can be stored using 1 byte? What is the hexadecimal representation of 252? How many bytes are used to store an int? A double? I have an image that's 102,321 bytes in size and I write to a FAT file system that uses 512 byte blocks. How many blocks are needed to store this file? Explain. What needs to happen in order to securely delete a file (i.e. no file remnants remain) The Linux xxd command creates a hex dump of a given input. What does the output of return and explain what this command does. How can you convert an integer to a hex string.

Explanation / Answer

6)
>The function should be simple enough to understand without any explanation. It takes every 4 bits of the integer and matches the corresponding hex digit which it saves inside the buffer. Of course since this produces the reverse of the hexadecimal we want (since we read the number from the LSB) we need to reverse it in the end. That is achieved by simple XOR swapping. To use the function you would do something like below

#include <stdio.h>
int main()
{
char buff[16];
int length;   
length = uintToHexStr(3735928559,buff);
printf("0x%s with length:%d",buff,length);
return 0;
}

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