题解 | 取近似值

#include <stdio.h>

int main() {
    int d, f;
    scanf("%d.%d", &d, &f);
    while (f >= 10) f /= 10;
    // printf("%d - %d", d,f);
    if(f > 4)
        printf("%d\n", d + 1);
    else
        printf("%d\n", d);
    return 0;
}