need 4 high bits in 4 ports pins

Projects Programming
1

i need the 4 high bits of a binary number to set 4 pins on portc , not the four high bits of the port , meaning the four pins i need set are split between the 4 high and four low pins
example
binary 8 bit
extract 4 high bits : testNUmber<<4
PORTC 7 6 5 4 3 2 1 0
testNUmber x x x 1 1 1 1 x

these 4 bits need to set or clear these 4 pins
bitwise operations always make me run in circles

would i do something like
PORTC =0b00011110 | (testNUmber<<4);

??

I cant really test it out right now if not i would run some tests but im not home.

2 
PORTC&=0b11100001; // clear bits 1-4 in the port
PORTC|=(v>>3)&0b00011110; // set bits 1-4 in the port to 4 high bits in v (v=uint8_t)

Also you could do:

PORTC=(PORTC&0b11100001)|((v>>3)&0b00011110);
3

Do you have to use direct port manipulation?
If not look at doing this
http://www.thebox.myzen.co.uk/Tutorial/Arrays.html