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BrunoC12
Joined: 25 May 2017
Posts: 4
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| Problem using printf to print string variables |
 Posted: Thu May 25, 2017 7:56 pm |
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I am using strtok to separate any string. Then, I save the different values in a string variable. Up to this point the program is fine.
After that, I print all the values but I can not see that. The program prints three of the four values.
I'll pass the code, any opinions will be very helpful. Thanks
| Code: |
#include <string.h>
#include <stdio.h>
char ID[], ST[], OR[], AK[];
void main()
{
char string[30], term[4], *ptr;
int i;
strcpy(string,"one,two,three,four");
strcpy(term,",;");
i=0;
ptr = strtok(string, term);
while(ptr!=0) {
i++;
puts(ptr);
if(i==1)ID=ptr;
if(i==2)ST=ptr;
if(i==3)OR=ptr;
if(i==4)AK=ptr;
ptr = strtok(0, term);
}
i=0;
printf("%s \n\r %s \n\r %s \n\r %s \n\r ",ID, ST, OR, AK);
} |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Fri May 26, 2017 1:12 am |
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It works for me in MPLAB vs. 8.92 simulator with vs. 5.071. Of course, I
put a while(TRUE) at the end of the program, to prevent it from going
to sleep while it's still transmitting characters. Here is the output:
| Quote: |
one
two
three
four
one
two
three
four
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If it still doesn't work after you add a while(TRUE) statement at the end
of main(), then post a compilable test program, similar to what is shown
below:
| Code: |
#include <18F46K22.h>
#fuses INTRC_IO, NOWDT, BROWNOUT, PUT, NOPBADEN
#use delay(clock=4M)
#use rs232(baud=9600, UART1, ERRORS)
#include <string.h>
#include <stdio.h>
char ID[], ST[], OR[], AK[];
//=======================================
void main()
{
char string[30], term[4], *ptr;
int i;
strcpy(string,"one,two,three,four");
strcpy(term,",;");
i=0;
ptr = strtok(string, term);
while(ptr!=0)
{
i++;
puts(ptr);
if(i==1)ID=ptr;
if(i==2)ST=ptr;
if(i==3)OR=ptr;
if(i==4)AK=ptr;
ptr = strtok(0, term);
}
i=0;
printf("%s\r%s\r%s\r%s\r", ID, ST, OR, AK);
while(TRUE); // Prevent PIC from going to sleep
}
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Ttelmah
Joined: 11 Mar 2010
Posts: 19540
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| Posted: Fri May 26, 2017 7:03 am |
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| He launched two separate threads at the same time about this.... |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Fri May 26, 2017 7:33 am |
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Yes, I saw that. We posted only 3 minutes apart, and your post wasn't
visible to me at the time I posted. |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19540
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| Posted: Fri May 26, 2017 10:32 am |
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Happens... 
Usually, one starts to reply and by the time one has typed the reply another answer has appeared!...
Perhaps one of the moderators could 'units' the threads?. |
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BrunoC12
Joined: 25 May 2017
Posts: 4
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| Posted: Fri May 26, 2017 10:43 am |
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I tried with while(true), but the program send the same answer.
| Quote: |
one
two
three
four
one
two
three
I think the problem is that it doesn't save the last data in the variable AK because it prints an empty space at the end, but I do not know why |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Fri May 26, 2017 11:03 am |
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If you read my post, I said:
| Quote: |
If it still doesn't work after you add a while(TRUE) statement at the end
of main(), then post a compilable test program, similar to what is shown below:
#include <18F46K22.h>
#fuses INTRC_IO, NOWDT, BROWNOUT, PUT, NOPBADEN
#use delay(clock=4M)
#use rs232(baud=9600, UART1, ERRORS)
#include <string.h>
#include <stdio.h>
char ID[], ST[], OR[], AK[];
etc.
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Also post your compiler version. |
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BrunoC12
Joined: 25 May 2017
Posts: 4
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| Posted: Fri May 26, 2017 1:38 pm |
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Oh, sorry, I had not considered it. With that code the program works correctly, but I need to do it with the 16F628a.
I'm going to try MPLAB to see if it works.
Thanks for your help.
By the way, I use PCWHD Compiler Version 5.015. |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19540
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| Posted: Sat May 27, 2017 12:58 am |
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So, post us the code that doesn't work in the 628A.
Your original code doesn't show the processor stuff. PCM_programmer has posted code that works, so now show us similar code that doesn't.
I've taken PCM_Programmer's code, changed the header to:
| Code: |
#include <16F628A.h>
#fuses INTRC_IO, NOWDT, BROWNOUT, PUT, NOMCLR //no MCLR needed for my board
#use delay(internal=4M)
#use rs232(baud=9600, UART1, ERRORS)
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and it runs fine on a 628A. Prints:
| Quote: |
one
two
three
four
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on hyperterminal.
and just amended to say that the test was with 5.015. |
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