应该是最笨拙的办法，连%=都没用

#include <cstdio>
#include <cmath>
#include <iostream>
using namespace std;

int main() {
    double b;
    scanf("%lf", &b);
    int a = b*100;
    cout << "NOTAS:" << endl;
    printf("%d nota(s) de R$ 100.00\n", a/10000);
    printf("%d nota(s) de R$ 50.00\n", a%10000/5000);
    printf("%d nota(s) de R$ 20.00\n", a%10000%5000/2000);
    printf("%d nota(s) de R$ 10.00\n", a%10000%5000%2000/1000);
    printf("%d nota(s) de R$ 5.00\n", a%10000%5000%2000%1000/500);
    printf("%d nota(s) de R$ 2.00\n", a%10000%5000%2000%1000%500/200);
    cout << "MOEDAS:" << endl;
    printf("%d moeda(s) de R$ 1.00\n", a%10000%5000%2000%1000%500%200/100);
    printf("%d moeda(s) de R$ 0.50\n", a%10000%5000%2000%1000%500%200%100/50);
    printf("%d moeda(s) de R$ 0.25\n", a%10000%5000%2000%1000%500%200%100%50/25);
    printf("%d moeda(s) de R$ 0.10\n", a%10000%5000%2000%1000%500%200%100%50%25/10);
    printf("%d moeda(s) de R$ 0.05\n", a%10000%5000%2000%1000%500%200%100%50%25%10/5);
    printf("%d moeda(s) de R$ 0.01\n", a%10000%5000%2000%1000%500%200%100%50%25%10%5/1);
    return 0;
}