为什么零分

hooray @ 2017-01-25 21:15:41

#include<stdio.h>
main(){
    int a,i;
    double sn=0;
    scanf("%d",&a);
    for(i=1;sn<(double)a;i++){
        sn=sn+1.0/i;
}
printf("%d",i);
        return 0;
}

by huihao @ 2017-01-28 19:41:47

main(){

int a,i;

把这个int，改为double

by huihao @ 2017-01-28 19:45:17

#include<stdio.h>
int main(){
    double a,i;
    double sn=0;
    scanf("%lf",&a);
    for(i=1;sn<=a;i++){
        sn=sn+1/i;
}
printf("%.0lf",i-1);
        return 0;
}
这是改过后的；