Please Help! Post: 53975

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Top Forums Programming Please Help! Post 53975 by laila63 on Thursday 29th of July 2004 01:44:19 PM

07-29-2004

Registered User

Please Help!

I'm trying to comple this small program to waste CPU usage. The code is as follow:

Code:

#include <time.h>

#define SLEEPTIME 5

time_t start, end;
start=time(NULL);
end=start+SLEEPTIME;

while(end > start){
     start=time(NULL);
}

and i got the following errors:

Code:

 g++ waste.cpp
waste.cpp:6: error: ISO C++ forbids declaration of `start' with no type
waste.cpp:6: error: conflicting types for `int start'
waste.cpp:5: error: previous declaration as `time_t start'
waste.cpp:7: error: ISO C++ forbids declaration of `end' with no type
waste.cpp:7: error: conflicting types for `int end'
waste.cpp:5: error: previous declaration as `time_t end'
waste.cpp:9: error: syntax error before `while'

what could be wrong? if there's a better way to do this, please suggest.
Thank you much!

laila63

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LEARN ABOUT PLAN9

cpp

CPP(1)							      General Commands Manual							    CPP(1)

NAME

       cpp - C language preprocessor

SYNOPSIS

       cpp [ option ...  ] [ ifile [ ofile ] ]

DESCRIPTION

       Cpp  interprets ANSI C preprocessor directives and does macro substitution.  The input ifile and output ofile default to standard input and
       standard output respectively.

       The options are:

       -Dname
       -Dname=def
       -Idir  Same as in 2c(1).

       -M     Generate no output except a list of include files in a form suitable for specifying dependencies to mk(1).  Use twice to list  files
	      in angle brackets.

       -N     Turn  off  default include directories.  All must be specified with -I.  Without this option, /$objtype/include and /sys/include are
	      used as the last two searched directories for include directives, where $objtype is read from the environment.

       -V     Print extra debugging information.

       -+     Understand C++ comments.

       The output file contains processed text sprinkled with lines that show the original input line numbering:

	      #line linenumber "ifile"

       The input language is as described in the ANSI C standard.  The C compilers do not use cpp; they contain their own simple but adequate pre-
       processor, so cpp is usually superfluous.

FILES

       /sys/include
	      directory for machine-independent include files

       /$objtype/include
	      directory for machine-dependent include files

SOURCE

       /sys/src/cmd/cpp

SEE ALSO

       2c(1)

																	    CPP(1)