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problem with data types

 
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weg22



Joined: 08 Jul 2005
Posts: 91

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problem with data types
PostPosted: Wed Apr 26, 2006 9:52 am     Reply with quote
The code below is outputting a value of "-66" for "rud_pwm". How is this possible if ints are by default unsigned?

Code:

#include <16F877A.H>
#include <stdlib.h>
#include <math.h>

#fuses HS,NOWDT,NOPROTECT,PUT,NOLVP
#use delay(clock=10000000)
#use rs232(baud=9600, xmit=PIN_D6, rcv=PIN_D7, stream=PC)


void main()
{
   long pwm=190;
   int rud_pwm = 0;


   while(1)
   {
      rud_pwm = (int)pwm;
      fprintf(PC, "output: %d\r\n", rud_pwm);
   }
}
Fro_Guy



Joined: 26 Apr 2006
Posts: 12

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PostPosted: Wed Apr 26, 2006 9:56 am     Reply with quote
try using %U
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