1/O:printf(),getchar(),putchar()? #include <stdio.h> Processor int main(void) int ch; FSB Graphics North Bridge SDRAM printf("Input a character:"); PCI 33 MHz M→ /read a Slots character from [cD-ooE South Bridge the standard input USB ISA stream * ch getchar(); Super putchar(ch); COM1 COM2 return 0;I/O：printf()，getchar()，putchar()？ #include <stdio.h> int main(void) { int ch; printf("Input a character:"); /* read a character from the standard input stream */ ch = getchar(); putchar(ch); return 0; }