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hadeelqasaimeh
Joined: 05 Jan 2006
Posts: 105
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| copy string to another within limited chars |
 Posted: Sun Jan 08, 2006 8:48 am |
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hi all
how can i copy some char(limited by two chars) from on string to another
i try to do this | Code: |
#include <16f874.h>
#include "lcd_kbd1.c"
#include <string.h>
#fuses XT,NOWDT,NOLVP
#use delay(clock=4000000) //one instruction=1us
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7,ERRORS)
static char RX[20] ,MX[20] ,string1[20], string2[20],S1[10],S2[10];
static int1 jj;
static int8 i,n;
static int8 rank1,rank2,r;
#int_rda
void serial_isr() {
RX[i++]=getch();
//strcpy(string1,RX);
jj=1;
}
void main() {
jj=0;
strcpy(S1,"C");
strcpy(S2,"H");
LCD_Init ( );
enable_interrupts(GLOBAL);
enable_interrupts(INT_RDA);
if(jj==1) {
strcpy(string1,RX);
n=0;
rank1=strcspn(string1, S1); // Count of initial chars in string1 not in s2
rank2=strcspn(string1, S2); // Count of initial chars in string1 not in s2
LCD_PutCmd ( CLEAR_DISP );
LCD_SetPosition ( LINE_16_1);
printf(LCD_PutChar,string1);
delay_ms(2000);
LCD_PutCmd ( CLEAR_DISP );
LCD_SetPosition ( LINE_16_1);
printf(LCD_PutChar,"rank1 is%u",rank1);
LCD_SetPosition ( LINE_16_2);
printf(LCD_PutChar,"rank2 is%u",rank2);
delay_ms(2000);
// r=rank2-1;
// LCD_PutCmd ( CLEAR_DISP );
// LCD_SetPosition ( LINE_16_1);
// printf(LCD_PutChar,"ris%u",r);
for(i=(rank1+2);i<rank2;i++) {
MX[n]=RX[i];
n++;
}//for
strcpy(string2,MX);
LCD_PutCmd ( CLEAR_DISP );
LCD_SetPosition ( LINE_16_1);
printf(LCD_PutChar,"string2",string2);
jj=0;
i=0;
}//if
}//MAIN
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its give me
ABCDEFGHIJKLMNOP
rank1=2,
rank2=7,
string2=
nothing in string2
also i try to do this
| Code: |
for(i=(rank1+2);i<rank2;i++) {
string2[n]=string1[i];
n++;
}//for |
and give me the same.
note:its supposed to recieve ABCDEFGHIJKLMNOP from another pic
so whats wrong???????
thanx alot |
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hadeelqasaimeh
Joined: 05 Jan 2006
Posts: 105
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| Posted: Sun Jan 08, 2006 9:00 am |
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oh....yes i get it
im sorry , if orget to do this
| Code: | | printf(LCD_PutChar,"string2 is %s",string2); |
its working now!!! but why do string 1 appear on lcd without doing this??
this is strange  |
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VanHauser
Joined: 03 Oct 2005
Posts: 88
Location: Ploiesti, Romania
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| Posted: Sun Jan 08, 2006 1:21 pm |
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string1 appeared because there is no format specifier string like "string1 is %s". When you specify only a string, printf is wise enough to notice you are trying to print that string. I hope I made myself clear.
Keep in mind that you can print a single string with LCD_PutChar(string)
or LCD_PutChar("this is some text"). |
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