2024-10-14 08:25:59
#include<stdio.h>
int main(void)
{
double a=123.456789;
double b;
b=(int(a*1000+0.5))/1000.0;
printf("a=%f\tb=%f\n",a,b);
return 0;
}
2024-10-14 09:34:08
2024-10-14 09:28:51
2024-10-14 08:18:13
if(y < 0.0) {
sign = -1;
y = -y;
}
x = (int)((1000 * y + 0.5)/1000)*sign;