题解 | #取近似值#

#include <stdio.h>
#include <string.h>
#include <math.h>

 int roundX(double x)
{
    return (x >= 0) ? (int)(x + 0.5) : (int)(x - 0.5);
}

int main()
{
    double n;
    scanf("%lf", &n);

    printf("%d", roundX(n));

}