Reading a Digital input

[steppermotor]

I have a PIC16F877A, I want to read the digital input D0-D7 coming in from a separate adc chip. I know I can set the port C of the pic to be an input by:

SET_TRIS_C(0x00);

However, how do I transform each bit (or the byte) so they can be displayed in a print statement.

Thanks

[PCM programmer]

[Douglas Kennedy]

The pattern on a digital port in your case C can be transferred to a variable
var=input_c() where var is an 8 bit unsigned integer and input_c refers to your port c.
To the PIC this information is internally notated as binary and takes on values 0..255(dec).
Now this value has an external notation representing some voltage with a voltage range with 256 stepped increments. The PIC knows nothing about this it is just 8 bits to the PIC. Next you want to change notation and want printf to reinterpret these 8 bits. Now you have a choice you could ask printf to renotate the 8 bits as ascii notated hexadecimal or maybe ascii notation in base ten or simply send it out in its currrent internal PIC notation ( binary)
Look at the manual and see the choices you have for printf.
Often you want the printf to notate your ADC value as a voltage ex 3.9v
Suppose 255 from your ADC notates for 10v and 0 for 0 volts. Then you want the pic to do a calculation so printf is supplied with the binary notated value of 100 (dec) when var is 255(dec)... 50(dec) when 127(dec). Now you need a 16bit unsigned variable var1=(var*100)/256 ( the compiler will optimize this and do a shift). Now with printf you want it to renotate the 16 bit binary as ascii decimal with an implied decimal pt the printf documentation will show you how to do it. Now this example only allows 100 values 0.0 v to 10.0v but you should be able to modify it to suit your needs