关于#c++#的问题，不明白哪里出错，请各位专家解答！

Question

#include<stdio.h>
int main()
{
    double a, b, c, d = 0.05;
        printf("please enter your salar");
        scanf_s("%lf", &a);
            b = d * a;//shui
            c = a - b;//shijisuode
            printf("%2f\n", a);
            printf("%2f\n", b);
            printf("%2f\n", c);
        return 0;
}

Answer 1

%.2lf