error C141: syntax error near 'unsigned'

Where, precisely, does error C141: syntax error near 'unsigned' occur in this code?

Where, precisely, does error C141: syntax error near 'unsigned' occur in this code?

/*interrupt setting (routine)***/

void TMR_0(void) interrupt 1
     {
     TF0  = 0;
         TR0  = 0;
         TH0  = 0xAA;

     disp(unsigned int);  at this point

         TL0  = 0x00;
         TR0  = 1;
     }
</prr>

Well, the error should be obvious!

But we've all been at that point of staring at a piece of code for so long that we can no longer see the wood for the trees!

So, back to basics: how do you call a function in 'C'?
How do you supply parameters when you call a fucntion in 'C' - what should go within the parentheses...?

What is the value or variable that you actually want to pass to the display() function at this point...?

unsigned int go()
     {
/***shift key press identification *********/

         if(KEY2_SFT == 0)
           {
           sft++;
           sft_wait();
            KEY2_SFT = 1;
           if(sft > 4)
             {sft = 1;}
            a = sft; i want to pass this value
            return(a);
           }

/*********************************************/

disp(unsigned int);  at this point

OK, let's take this one step at a time.

How do you pass a parameter to a function when you call it?

Insert an appropriate call to my_function in the code below, passing fred as its parameter:

void my_function( unsigned int x ); // function prototype

void main( void )
{
   unsigned int fred;

   // Insert a call here

}

void disp(unsigned int a);
//it going to used in the interrupt

unsigned int go (void);
//going to used in main function


void main()
     {
         P0   = 0x3f; /* initial  port setting */
         P1   = 0xff;
         P2   = 0xf8;
         P3   = 0xff;

         IE   = 0x82;/*timer and interrept setting*/
         TMOD = 0x01;
          TH0  = 0xAA;
           TL0  = 0x00;
         TR0 =  1;

     while(1)
             {
             unsigned int go();
             }
    }

void my_function( unsigned int x ); // function prototype




void main( void )
{
   unsigned int fred;




   my_function(unsigned int);// Inserted a call here




}

OK. you are struggling with the basics of calling a function in 'C'.

You need to set aside your code, and concentrate just on the basic concept of calling a function - any function - and passing a parameter to it.

There is no point in trying to go any further before you have mastered this fundamental concept.

Hint: Look-up "formal" and "actual" parameters in your 'C' textbook.

Then try the exercise again:

Insert an appropriate call to my_function in the code below, passing fred as its parameter:

void my_function( unsigned int x ); // function prototype

void main( void )
{
   unsigned int fred;

   // Insert a call here

}

Insert an appropriate call to my_function in the code below, passing fred as its parameter:

then

void my_function( unsigned int x ); // function prototype
void main( void )
{
unsigned int fred;
my_function(unsigned int fred);// Inserted a call here
}

here the "actual" parameter is fred

and the "formal" parameter is x

Did you compile it?
What did the compiler say?

What does your 'C' text book say about calling functions?
Specifically, what should go inside the brackets?

"here the 'actual' parameter is fred
and the 'formal' parameter is x"

Yes - good!

Now, what should go inside the brackets in the call to the function?

as far as this e.g. concern the value assigned to fred is going to used in the my_function.i.e. it passing to through the basket and used by the function

"the value assigned to fred is going to used in the my_function"

Yes, so if you want the value of 'fred' to be passed through to the function, what do you put inside the brackets in the function call?

Hint: the type of 'fred' has already been defined in the line

unsigned int fred;

So the compiler already knows what type 'fred' is - you don't have to specify it again, do you...?

as far as this e.g. concern the value assigned to fred is going to used in the my_function.i.e. it passing to through the basket and used by the function

void my_function( unsigned int x ); // function prototype
void main( void )
{
unsigned int fred;
my_function(fred);// it is ok now 
}

but now it genrates warnning, and not going to execute the which executes before the change's

 while(1)
 {
 unsigned int go();this function of the code
 }

WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS

Correct!

Do you now understand what the problem was?

"but now it genrates warnning"

That is actually progress!
Before, it didn't even compile - now it does compile, but gives this warning.

You need to post the full text of the message (remember: copy-and-paste) - it will include the name of the segment that is "uncalled"