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conditional if statement

durmus akdogan over 18 years ago

i want use if satement, to do something for the one time, example:

main(){
char k;
k=0;

while(1){

if(k==0){
printfLCD("please only one time\n");
k=1;
}//end if

printfLCD("test message\n");

}//end while
}//end main

but it isnt work, program enters the if statement infinite time. where is the error?, there is anyything about keilc51, which is i dont know? i use upsd3434 8051 microcontroler, sory for my nglish

Parents

0 durmus akdogan over 18 years ago in reply to durmus akdogan

here my int_to_char function (i writed), may be trouble is related with this function

char num_to_char(unsigned char val)     //0-15 aras&#305; numerik de&#287;eri char 'a dönü&#351;türür
{
   char c;
   if (val < 10)
   {
     c=val+'0';
   }
   else
   {
     val=val-10;
     c=val + 'A';
   }
   return(c);
}


unsigned char *int_to_char(unsigned long sayim)

{
        unsigned long xdata bolen=1;
        unsigned long xdata sayi;
        char xdata s;
        unsigned char xdata c,d,i,k;
        unsigned char xdata *ch;

        sayi=sayim;

        if (sayi<=9) s=0;
        else if (sayi<=99) s=1;
        else if (sayi<=999) s=2;
        else if (sayi<=9999) s=3;
        else if (sayi<=99999) s=4;
        else if (sayi<=999999) s=5;
        else if (sayi<=9999999) s=6;
        else if (sayi<=99999999) s=7;
        else if (sayi<=999999999) s=8;

        k=s;

        for (i=s;i>0;i--)
        {
                bolen=bolen*10;
        }

        *(ch+s+1)='\0';

        do
        {
                d=sayi/bolen;
                c=num_to_char(d) ;
                *(ch+k-s)=c;
                sayi=sayi%bolen;
                bolen=bolen/10;
                s--;

        }while(s>=0);

        return (ch);
}

Reply

0 durmus akdogan over 18 years ago in reply to durmus akdogan

here my int_to_char function (i writed), may be trouble is related with this function

char num_to_char(unsigned char val)     //0-15 aras&#305; numerik de&#287;eri char 'a dönü&#351;türür
{
   char c;
   if (val < 10)
   {
     c=val+'0';
   }
   else
   {
     val=val-10;
     c=val + 'A';
   }
   return(c);
}


unsigned char *int_to_char(unsigned long sayim)

{
        unsigned long xdata bolen=1;
        unsigned long xdata sayi;
        char xdata s;
        unsigned char xdata c,d,i,k;
        unsigned char xdata *ch;

        sayi=sayim;

        if (sayi<=9) s=0;
        else if (sayi<=99) s=1;
        else if (sayi<=999) s=2;
        else if (sayi<=9999) s=3;
        else if (sayi<=99999) s=4;
        else if (sayi<=999999) s=5;
        else if (sayi<=9999999) s=6;
        else if (sayi<=99999999) s=7;
        else if (sayi<=999999999) s=8;

        k=s;

        for (i=s;i>0;i--)
        {
                bolen=bolen*10;
        }

        *(ch+s+1)='\0';

        do
        {
                d=sayi/bolen;
                c=num_to_char(d) ;
                *(ch+k-s)=c;
                sayi=sayi%bolen;
                bolen=bolen/10;
                s--;

        }while(s>=0);

        return (ch);
}

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