thank you to reply
i want to use it as digital I/O
all other pins runs but this pin 5 not run
please tell me if any intilization to make it digital I/O
http://ww1.microchip.com/downloads/en/DeviceDoc/39582b.pdf
You need to set register ADCON1 to 0b_0000_011x for all the port A pins to be digital. then TRISA = 0 will set them to be outputs.
Have a look at the datasheet for other settings. You don't have the option of setting A3 to digital and the rest of PORTA to analogue.
I have tested the above with a 16f877; I do not have the "A" version.