Scanf is not working in posix sample
Thomas Doerfler
Thomas.Doerfler at imd-systems.de
Sat May 21 06:13:11 UTC 2005
Jason,
it might have been late when you tried out this code, but... scanf does
not work that way. You can't put a prompt text into the first parameter
of scanf. Try out this one: replace your scanf line with:
printf("Eingabe: ");
scanf("%d",&nummer);
wkr,
Thomas.
Jason Davis schrieb:
> Hello,
>
> I modified a posix printf example slightly with an additional scanf. But I
> can't figure out why the program is not running. It starts and shows the
> printf "Hello World" string but the it stops without any possible input via
> keyboard. I'm using a PC board with a PIII.
>
> I added the test.c file and my makefile below. Any ideas?
>
> Regards,
> Jason
>
> The test.c file:
>
> /*
> * Simple test program -- simplified version of sample test hello.
> */
>
> #include <bsp.h>
>
> #include <stdlib.h>
> #include <stdio.h>
> #include <stdlib.h>
>
> void *POSIX_Init(
> void *argument
> )
> {
> int nummer;
> printf( "\n\n*** HELLO WORLD TEST ***\n" );
> printf( "Hello World\n" );
> scanf("Eingabe: %d",&nummer);
> printf( "*** END OF HELLO WORLD TEST ***\n" );
> exit( 0 );
> }
>
> /* configuration information */
>
> #define CONFIGURE_TEST_NEEDS_CONSOLE_DRIVER
>
> #define CONFIGURE_POSIX_INIT_THREAD_TABLE
>
> #define CONFIGURE_MAXIMUM_POSIX_THREADS 2
>
> #define CONFIGURE_INIT
>
> #include <confdefs.h>
>
> /* end of file */
>
> And my makefile:
>
> #
> # Makefile
> #
>
> #
> # RTEMS_MAKEFILE_PATH is typically set in an environment variable #
>
> EXEC=hello.exe
> PGM=${ARCH}/$(EXEC)
>
> # optional managers required
> MANAGERS=io
>
> # C source names
> CSRCS = test.c
> COBJS_ = $(CSRCS:.c=.o)
> COBJS = $(COBJS_:%=${ARCH}/%)
>
> # C++ source names
> CXXSRCS =
> CXXOBJS_ = $(CXXSRCS:.cc=.o)
> CXXOBJS = $(CXXOBJS_:%=${ARCH}/%)
>
> # AS source names
> ASSRCS =
> ASOBJS_ = $(ASSRCS:.s=.o)
> ASOBJS = $(ASOBJS_:%=${ARCH}/%)
>
> # Libraries
> LIBS = -lrtemsall -lc
>
> include $(RTEMS_MAKEFILE_PATH)/Makefile.inc
>
> include $(RTEMS_CUSTOM)
> include $(PROJECT_ROOT)/make/leaf.cfg
>
> OBJS= $(COBJS) $(CXXOBJS) $(ASOBJS)
>
> all: ${ARCH} $(PGM)
>
> $(PGM): $(OBJS)
> $(make-exe)
>
> j:
> @echo $(CFLAGS_DEBUG_V)
> @echo $(RTEMS_USE_GCC272)
--
--------------------------------------------
IMD Ingenieurbuero fuer Microcomputertechnik
Thomas Doerfler Herbststrasse 8
D-82178 Puchheim Germany
email: Thomas.Doerfler at imd-systems.de
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