variable declaration in a void function

[winnie mong]

helo there..
i have a function called choice below and i want to use it to produce a void function do_set_time.i am not sure how to name the parameters in my function call. please help...
scroll function is as follows:it scrolls message on the screen

---

Code C - [expand]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
/************************************************************************************/
/* scroll()                                                                         */
/* This provides a scrolling message a number of times                              */
/************************************************************************************/
unsigned char   dpos;
unsigned char   pulses;
void scroll(const char *mess, unsigned char ntimes)
{
    unsigned char   stop;
 
    memset(sbuf,' ',SCROLL_BUF_LEN);
    strcpy(smess,mess);                     /* copy message into buffer */
    do {
        mess=sbuf;                          /* point to begin of message */
        do {
            display(mess++);                /* display part of the message */
            stop=pulses+Delay500ms;
            do {
                if(kbhit()) {               /* abort scrolling ? */
                    clrscr();               /* a clear display */
                    return;                 /* yes then bye */
                }         
            } while(stop!=pulses);
        } while(*mess);                     /* until all characters are displayed */
    } while(--ntimes);                      /* until message is displayed ntimes */
    clrscr();                               /* a clear display */
}

---

this is the choice function for one to be able to pick an item from a scrolling menu

---

Code C - [expand]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
/************************************************************************************/
/* choice()                                                                         */
/* This a scrolling menu from which user functions can be selected for use          */
/************************************************************************************/
 
char choice(const   char *const *menu)
{
    const   char    *src;
    char    i,j,stop;
 
    for(i=0;i<3;i++) {
        for(j=0;src=menu[j];j++) {              /* get next string to be scrolled */ 
            scroll(src,1);                      /* scroll the menu item message */
            stop=pulses+Delay500ms;
            do {
                if(kbhit()) {                   /* check for keypad activities */
                    clrscr();                   /* clear display */
                    return j;                   /* if yes return with the key code */
                }
            } while(stop!=pulses);
        }
    }
    scroll("--TIMEOUT--",1);                    /* no input for 20 seconds stop processing */
    return(0xFF);                               /* dummy return will never be taken */
}

---

this is what i tried to come up with

---

Code C - [expand]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
extern void scroll(const char *mess, unsigned char ntimes);
extern void clrscr(void);
extern char choice(const char *const *menu);
 
void do_set_time (int i, const char *const menu2[]){
    const char *const menu2[]={
       "CLK TIME",  /*parameter==0*/
       "ON TIME",    /*parameter==1*/
       "OFF TIME",    /*parameter==2*/
       0}; 
    
        if(i=0){printf("set system clock");
        }
        else if(i=1){printf("set geyser ON time");
        }
        else if(i=2){printf("set geyser OFF time");
        }
}//the three parameters will have same code, and what is being pointed to will 
//be executed in the main code.

---

dont hesitate to ask if you need more clarity..

 

[milan.rajik]

From where does pulses get its value?

And what is this (const char *const *menu)?

Where is code for scroll()?

 

[winnie mong]

(const char *const *menu) is the parameter to point to the menu i would have created

- - - Updated - - -

i have edited my post.

 

[winnie mong]

[SOLVED]
I managed to use pointers .