getc()

• This function gets single character as input and returns an integer value. If this fails, it returns EOF.

Syntax of getc()

int getc(FILE *stream);

getchar()

• The function getchar() reads the character from the standard input while getc() reads from the input stream.

 Syntax of getchar() 

  int getchar(void);

getch()

• The function getch() is a non-standard function.
• It is included in “conio.h” header file.
• Getch() is not a part of standard library.
• It returns the entered character without even waiting for the enter key.

  Syntax of getch()

int getch();

getche()

• Like getch(), the getche() function is also a non-standard function and is included in “conio.h” header file.
• It reads a single character from the keyboard and returns it immediately without even waiting for enter key.

 Syntax of getche()

int getche(void);