关于c++的输入问题

Question

#include<iostream>
using namespace std;
int main() {
    printf("请输入三个小数\n");
    double a = 1.2;
    double b= 1.1;
    double c = 1.3;
    double d = 1.4;
    scanf_s(" % f ,%f ,%f", &a,&b,&c);

    d = a * 2 + b * 3 + c / (a + 2) - 10;
    printf("%f\n",&d);
    return 0;

}

Answer 1

空格多了，输出不需要&