my answers are matched with test cases but can't passed the test cases

include

include

using namespace std;

int main() { int T; cin >> T; cout << setiosflags(ios::uppercase); cout << setw(0xf) << internal; while(T--) { double A; cin >> A; double B; cin >> B; double C; cin >> C; int integer=A; int devident=integer;//100 int devisor=16; string hexa=""; string tempString=""; int length=0; int rem;
while(devident) {
int temp=devident/devisor; rem=devident%devisor; devident=temp; if(rem<10){ tempString=48+rem; hexa=tempString+hexa; } else{ tempString=87+rem; hexa=tempString+hexa;

        }



    }
    cout<<setw(0);
    cout<<"0x";
    cout << hexa <<endl;
    int in=B;
    double decimal=B-in;
    int third=(decimal*1000);
    third=third%10;
    int temp=decimal*100;
    if(temp==0)
    {   

        decimal=0.01;
    }
    if(third>=5)
    {
        temp++;
    }
    else if(temp<10)
    {  
        decimal=temp*0.001;
    }
    else{
        decimal=temp*0.01;
    }
    B=decimal+in;
    string prefix="";
    while(in>0)
    {
        in=in/10;
        length++;
        prefix+="_";
    }
        for(int i=0;i<11-length*2;i++)
        {
            prefix+="_";
        }



    if(B>0)
    {
        prefix+="+";
        cout<<prefix<<fixed<< setprecision(2)<<B<<endl;

    }
    else{
        prefix+="-"; 
          cout <<prefix<<fixed << setprecision(2)<<B<<endl;
    }
    ;


    cout <<scientific<<setprecision(9)<<C<<endl;  
    /* Enter your code here */
}``