C Program to Generate Random Hexadecimal Bytes

This C program generates random hexadecimal bytes of arbitrary length. The idea is to genrate decimal number first and convert it to hexadecimal.

Here is the source code of the C program to generate random hexadecimal bytes. The C program is successfully compiled and run on a Linux system. The program output is also shown below.

```
#include <time.h>
```
```
#include <stdio.h>
```
```
#include <stdlib.h>
```
```
 
```
```
int main(void)
```
```
{
```
```
    int length;
```
```
    char str[] = "0123456789ABCDEF";
```
```
    /* Seed number for rand() */
```

    srand((unsigned int) time(0) + getpid());

```
    length = rand() % 15 + 8;
```
```
 
```
```
    while(length--) {
```
```
        putchar(str[rand() % 16]);
```
```
        srand(rand());
```
```
    }
```
```
    printf("\n");
```
```
 
```
```
    return EXIT_SUCCESS;
```
```
}
```

$ gcc hexadecimal.c -o hexadecimal
$ ./hexadecimal
 
DE38C3A25D

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