pls help me convert C to PICBASIC

[Archangel]

I use Proton+ PICbasic from Crownhill, I use Proteus ISIS Professional as Simulator...

Proton <> PBP _ Crownhill sponsors their forum too, and also sells that compiler.
Your Code as posted with my comments in red:

Device 16F877A
XTAL = 20   <font color=red> DEFINE OSC 20</font color>  
ALL_DIGITAL = TRUE  <font color=red> Not in PBP 

The following will work but there are better ways.</font color>
Symbol CS = PORTC.4		       ' SPI eeprom CS line
Symbol SCK = PORTC.3		      ' Clock pin
Symbol SI = PORTC.5			' Data in pin
Symbol SO = PORTC.5		
<font color=red> Like . . . 
CS VAR PortC.4
No Dims in PBP </font color>
Dim reg as BYTE
Dim datas[10] as BYTE
Dim dongu as BYTE
<font color=red> do it this way
Dongu VAR BYTE
Datas VAR BYTE[10]</font color>
MAX6952_Init:
    PORTC.0=0
	FOR dongu = 1 to 2
	Shout SI, SCK, MSBFIRST, [0x04]
	Shout SI, SCK, MSBFIRST, [0x01] 
	NEXT
	PORTC.0=1
	PORTC.0=0	
	
	PORTC.0=0
	FOR dongu = 1 to 2
	Shout SI, SCK, MSBFIRST, [0x01]
	Shout SI, SCK, MSBFIRST, [0xFF] 
	NEXT
	PORTC.0=1
	PORTC.0=0	
	
	PORTC.0=0
	FOR dongu = 1 to 2
	Shout SI, SCK, MSBFIRST, [0x02]
	Shout SI, SCK, MSBFIRST, [0xFF] 
	NEXT
	PORTC.0=1
	PORTC.0=0	
	
	PORTC.0=0
	FOR dongu = 1 to 2
	Shout SI, SCK, MSBFIRST, [0x03]
	Shout SI, SCK, MSBFIRST, [0x01] 
	NEXT
	PORTC.0=1
	PORTC.0=0	

	Return
max6952_putchar:
    PORTC.0=0
	FOR dongu = 1 to 2
	Shout SI, SCK, MSBFIRST, [reg]
	Shout SI, SCK, MSBFIRST, [datas[0]] 
	NEXT

	PORTC.0=1
	PORTC.0=0			
    
    Return

Main:
	TRISC=%010001100
	Goto MAX6952_Init
	reg=0x20
	datas[0]="A"
	Goto max6952_putchar
     Delayms 500<font color=red> Nope! Pause 500</font color>
Goto main

That should give you something to chew on a while.