int n;
scanf(&n, "%d");
if (n<1) {
printf("输入不合法");
return 0;
}
int temp = 0, count = 0;
for (int i = 1; i <= n; i++) {
temp += i;
count += 1.0/temp;
}
return count;
}
注意整形相除时分子小于分母都等于0，所以要把分子1写成浮点型才能正确运算。本回答被网友采纳
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