Hilfe bei CCS Compiler für PIC

.Hallo!!
Kann mir einer von euch bitte mal den unterschied von:

                     "getc" & "fgetc"
Die Erklährung in der Hilfe:
Gets a character on the receive pin(from the specified 
stream in case of fgetc, stdin by default). Use KBHIT to 
check if the character is available

                     "gets" & "fgets"
Die Erklährung in der Hilfe:
Gets a string on the receive pin(from the specified stream 
in case of fgets, STDIN by default).  Use GETC to 
receive each character until return is encountered.

                      "putc" & "fputc"
Die Erklährung in der Hilfe:
Puts a character over the transmit pin(on the specified 
stream in the case of FPUTC, stdout by default)

                      "puts" & "fputs"
Die Erklährung in der Hilfe:
Puts a string over the transmit pin(on the specified 
stream in the case of FPUTC, stdout by default). Uses 
putc to send each character.

                      "printf" & "fprintf"
Die Erklährung in der Hilfe:
Prints the formatted string(on the specified stream in the 
case of FPRINTF, stdout by default). Refer to the printf
help for details on format string


erklähren!?!?!
Währe euch echt dankbar!!
MFG Ingo