分数化小数(指定精度)

#include <stdio.h>#include <iostream>#include <iomanip>using namespace std;/**    输入正整数a，b，c，输出a/b的小数形式，精确到小数点后c位。a，b≤106，c≤100。输入包含多组数据，结束标记为a＝b＝c＝0。**/int main() {    int a,b,c;    int i = 0;    while (scanf("%d%d%d", &a, &b, &c) && (a != 0 || b != 0 || c != 0)) {        double sum = double(a) / b;        cout << "Case " << ++i << ": " << setprecision(c) << sum << endl;    }    return 0;}