Basic I/O

There are a couple of function that provide basic I/O facilities.

probably the most common are: getchar() and putchar(). They are defined and used as follows:

• int getchar(void) - reads a char from stdin
• int putchar(char ch) - writes a char to stdout, returns character written.

Related Functions:

int getc(FILE *stream), int putc(char ch,FILE *stream)