Read hex stream in stdin

Question

I want to transfer (For example) {0x000E, 0x09, 0x0022} in 'stdin'. I don't want to do it below method.

uint16 ulSize = 0;
uint8 ulType = 0;
uint16 ulTag = 0;
scanf("%x%x%x", &ulSize, &ulType, &ulTag);

Because I need to enter '\n' 3 times.

Is there a convenient way that I can transfer hex buffer using stdin??

Below link is where I refer. (Use scanf to take hex instructions input from the user and save them in char. (C))

Thanks ahead.