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?????????????a?b??????????????k???r???r???a = k*b + r???0 ? r < b???????????k?r???????

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#include 
   
    #include 
    
     #include 
     
      #include 
      
       #include 
       
        using namespace std;int main() {    double a, b, r;    scanf("%lf%lf", &a, &b);    int k = static_cast
        
         (a / b); r = a - k * b; printf("%g\n", r); return 0;}
        
       
      
     
    
   

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