keypad entry problem

[morebudwiser]

hi i am using pic 16f877 and have an lcd connect to port d and a 4x4 keypad on port c . i have tested the hardware using the ccs lcdkb example and it is working ok. the problem i am having is i am trying to read multiple key press so if key 1 and 3 and press the * key i get a value of 13 returned. i am saving each key press to a string and then using the atoi funciton to change the value to an int but the value print on the lcd is not right here is my code below if anyone could help it would be much appreciated


#include "C:\Program Files\PICC\Drivers\lcd4x20test.h"
#include <LCD.C>
//#include <LCD420_d.C>
#include <KBD.C>
#include <stdlib.h>

char k , string[5];
char count, i = 0 ;
void main() {


lcd_init();
kbd_init();
lcd_putc("\fReady...\n");

while (TRUE)
{
do
{
k=kbd_getc();
}
while (k == '\0'); //wait for keypress
if (k == '*') // if keypress = * then
{
count = atoi(string); //copy string to count varible
printf(LCD_PUTC, "\n\f%d",count);
count = 0; //reset count
i = 0; //reset array
strcpy(string,"000000"); //reset string to = 0
}

else
{
string[i] = k; //copy value of key pressed to string
i++; //incerement i to point at next location
} //in array for further key press

}



}

[PCM programmer]

[40inD]

same question.
If i need to enter from keypad 2-digit number into a string. How many chars this string must hold? string[2] or string[3] (for '\0')?
I think the code must be like this:

string[i]=k;
....
i++;
...
strcat(string, '\0')
number=atoi(string);