a question about putch and getch

**jackhasf** · 10-31-2009

hello

getch is a function that returns the integer of a character that the user provides, right?

so it's like

Code:

int getch();

so if we have a character variable

Code:

a = 'B';

Code:

a = getch();

would return number 66, which is integer

putch is a function that prints the character of the variable's ASCII code in this case variable's (a), but why putch is declared like

Code:

int putch(int a);

i mean, it returns a character right? shouldnt it be

Code:

char putch(int a);

?

thanks in advance

**nadroj** · 10-31-2009

getch is a function that returns the integer of a character that the user provides, right?

putch [...] returns a character right? shouldnt it be

Code:

char putch(int a);

Its identical to "getch" returning the integer value of the character. "getch" returns the (integer) value of the input character, "putch" returns the (integer) value of the output character. So if you understand why "getch" returns int, you should understand why "putch" returns int.

Note: I dont know these conio.h functions, and Im assuming they behave similarly to the standard "getchar" and "putchar" functions.

**jackhasf** · 10-31-2009

hm, you're right

then i guess we define in printf if we want to see the character or the Ascii code by using %c or %d

thank you very much for your time and help

**nadroj** · 10-31-2009

then i guess we define in printf if we want to see the character or the Ascii code by using %c or %d

Correct. The point is there is only one "thing", i.e. the character "B". However, there are a number of different ways of representing this value, for example as a decimal number, hexadecimal number, binary number, octal number, or simply as a "char".

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