C语言级数求和，编译成功但是运行不通过

#include<stdio.h>
int main(){
    int k;
    int n = 1;
    float sum = 0;
    scanf("%d", &k);
    while (sum < k){
        sum += (1.0 / n);
        n = n + 1;
    }
    printf("%d", n);
    return n;
}