notes and coins

float a;
    scanf("%f",&a);
    int b;
    if(0<=a&&a<=1000000){
        printf("NOTAS:\n");
    b=a/100;
    printf("%d nota(s) de R$ 100.00\n",b);
    a=a-(b*100);
    b=a/50;
    printf("%d nota(s) de R$ 50.00\n",b);
    a=a-(b*50);
    b=a/20;
    printf("%d nota(s) de R$ 20.00\n",b);
    a=a-(b*20);
    b=a/10;
    printf("%d nota(s) de R$ 10.00\n",b);
    a=a-(b*10);
   b=a/5;
    printf("%d nota(s) de R$ 5.00\n",b);
    a=a-(b*5);
    b=a/2;
    printf("%d nota(s) de R$ 2.00\n",b);
    printf("MOEDAS:\n");
    a=a-(b*2);
    b=a/1;
    printf("%d moeda(s) de R$ 1.00\n",b);
    a=a-(b*1);
    b=a/0.50;
    printf("%d moeda(s) de R$ 0.50\n",b);
    a=a-(b*0.50);
    b=a/0.25;
    printf("%d moeda(s) de R$ 0.25\n",b);
    a=a-(b*0.25);
    b=a/0.10;
    printf("%d moeda(s) de R$ 0.10\n",b);
    a=a-(b*0.10);
   b=a/0.05;
    printf("%d moeda(s) de R$ 0.05\n",b);
    a=a-(b*0.05);
        b=a/0.01;
    printf("%d moeda(s) de R$ 0.01\n",b);