Actually, I owe you an apology. Usually, true and false are defined as 1 and 0, respectively, and the contrast on your green #define statements was such that I didn't notice the apostophes. So, yes, since you are defining true to be '1' (which is probably 49) and false to be '0' (which is probably 48), then you are okay -- just don't try to use your true and false as logical values!

 

Thank you very much @WBahn for helping me!

But the my original question is still unanswered. I am looking example where we need a function that doesn't take any arguments and that returns a value of type char in embedded system.

@MrChips I am waiting for your response. Why do you think that simple C and Embedded C are not different?

 

Thank you very much @WBahn for helping me!

But the my original question is still unanswered. I am looking example where we need a function that doesn't take any arguments and that returns a value of type char in embedded system.

Here is one example:

char getc(void)

@MrChips I am waiting for your response. Why do you think that simple C and Embedded C are not different?

C and Embedded C are not different.

Your question is backwards.
If simple C is different than Embedded C then there must be differences.

If simple C is not different from Embedded C then there is no response because they are not different.

 

Thank you very much @WBahn for helping me!

But the my original question is still unanswered. I am looking example where we need a function that doesn't take any arguments and that returns a value of type char in embedded system.

HOW MANY EXAMPLES DO YOU NEED!!!

You found one. I gave a couple others.

 

Here is one example:
char getc(void)

You have just declared prototype function. There is no much information about your function. You didn't mention what character your function return and when it return character. You have not mentioned any condition

HOW MANY EXAMPLES DO YOU NEED!!!

I just need two or three example's. I gave one example for LCD and Keypad. Get the key number from keypad and display that number on screen. I expect this type of example from you. I just need only example so that I will try to write function in programming.

 

Oh, you want me to fill in the code for you?

char getc( void )
{
... your code here
}

No. That is your exercise. See if you can fill in the code.

 

I just need two or three example's. I gave one example for LCD and Keypad. Get the key number from keypad and display that number on screen. I expect this type of example from you. I just need only example so that I will try to write function in programming.

Oh, we're getting demanding here.

No, we are not going to do that for you.
This is your exercise, not ours.

 

No. That is your exercise. See if you can fill in the code.

You are repeating my question look my first post #1.

Oh, we're getting demanding here.No, we are not going to do that for you.
This is your exercise, not ours.

You are taking me in wrong way. I am not demanding you to make program for me. I am not asking for any program. As I said I gave one example for LCD and Keypad. Get the key number from keypad and display that number on screen. I expect this type of example from you. I just need only example so that I will try to write function in programming

 

There are way too many combinations available to list down the function that takes nothing but returns an 8-bit char. It could be:

key = scanKeypad();

or status = GetLCDStatus();

or anything else, depending on the behaviour of the code flow.

 

You have just declared prototype function. There is no much information about your function. You didn't mention what character your function return and when it return character. You have not mentioned any condition

I just need two or three example's. I gave one example for LCD and Keypad. Get the key number from keypad and display that number on screen. I expect this type of example from you. I just need only example so that I will try to write function in programming.

I already gave you examples. Reading a value from an input port, reading a value from a buffer, reading a value from a communications device. Or how about generating a random byte value?

There, that's four examples.