demo3.c

类linux操作系统的源代码

#include <liza.h>


int main()
{
	unsigned long result=0;
	unsigned index;
	
	for(index=1;index<=50000;index++)
	{
		result += index;
		if( !(index%5000) )
		{
			out_dec(index/500);			
		}
	}
	get_scr();
	output("1+2+...+50000=");	
	release_scr();
	
	out_dec2(result);
	
	get_scr();
	output("end dem3");	
	release_scr();
	
}

int out_dec(u32_t n)
{
	int	i;
	char *sn = "0000000000%";
	for(i = 9; i >=0; i--){
		*(sn + i) = (n % 10) + '0';
		n = n /10;
	}
	get_scr();
	output(sn);	
	release_scr();
}

int out_dec2(u32_t n)
{
	int	i;
	char *sn = "0000000000";
	for(i = 9; i >=0; i--){
		*(sn + i) = (n % 10) + '0';
		n = n /10;
	}
	get_scr();
	output(sn);	
	release_scr();
}