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danielsoft (neregistrovaný)SLEEP(3) Linux Programmer's Manual SLEEP(3)
NAME
sleep - Sleep for the specified number of seconds
SYNOPSIS
#include <unistd.h>
unsigned int sleep(unsigned int seconds);
DESCRIPTION
sleep() makes the calling process sleep until seconds seconds have
elapsed or a signal arrives which is not ignored.
RETURN VALUE
Zero if the requested time has elapsed, or the number of seconds left
to sleep, if the call was interrupted by a signal handler.
sleep má parametr typu unsigned int a nikoliv float. v tom asi bude ten vtip. ha ha ha. -
???
#include <stdio.h>
void cekam_unsigned(unsigned int seconds) {
printf("\nvoid cekam_unsigned(unsigned int seconds):\nseconds=%u\n(signed)seconds=%d\n", seconds, (signed)seconds);
}
int main(void) {
printf("\n(float)1/0=%f\n(unsigned)((float)1/0)=%u\n(signed)((float)1/0)=%d\n", (float)1/0, (unsigned)((float)1/0), (signed)((float)1/0));
cekam_unsigned((float)1/0);
return 0;
}
...@...:/home/... $ gcc -Wall -ansi div_by_zero.c -o div_by_zero && ./div_by_zero
div_by_zero.c: In function ‘main’:
div_by_zero.c:8: warning: division by zero
div_by_zero.c:8: warning: division by zero
div_by_zero.c:8: warning: division by zero
div_by_zero.c:10: warning: division by zero
(float)1/0=inf
(unsigned)((float)1/0)=0
(signed)((float)1/0)=-2147483648
void cekam_unsigned(unsigned int seconds):
seconds=0
(signed)seconds=0
...@...:/home/... $
}
Co z jazyka C jsem prehledl?
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