Lab 6= Radix

#include<iostream>
using namespace std;
class student
{
public:
    int id;
    string name;
    int credit;
    float cgpa;
    void input()
    {
        cin>>id>>name>>credit>>cgpa;
    }
    void output()
    {
        cout<<"\t"<<id;
        cout<<"\t"<<name;
        cout<<"\t"<<credit;
        cout<<"\t"<<cgpa;
        cout<<endl;
    }
};
void CountingSort(student u[200],int n,int loc)
{
    int i,j;
    int w[10]= {0};
    student v[200];

    for(i=0; i<n; i++)
    {
        w[(u[i].id/loc)%10] =w[(u[i].id/loc)%10]+1;
    }
    for(i=1; i<=10; i++)
    {
        w[i]=w[i]+w[i-1];
    }
    for(j=n-1; j>=0; j--)
    {
        v[w[(u[j].id/loc)%10]-1]=u[j];
        w[(u[j].id/loc)%10]--;
    }
    for(j=0; j<n; j++)
    {
        u[j]=v[j];
    }
}
void RadixSort(student s[200],int n)
{
    int i,j,max=0,loc;
    for(i=0; i<n; i++)
    {
        if(s[i].id>max)
        {
            max=s[i].id;
        }
    }
    for(loc=1; max/loc>0; loc=loc*10)
    {
        CountingSort(s,n,loc);
    }
}

int main()
{
    student s[200];
    int i,j,n;
    cout<<"\nEnter the number of students:";
    cin>>n;
    cout<<"\nEnter Student information: \n";
    for(i=0; i<n; i++)
    {
        s[i].input();
    }
    cout<<endl;

    RadixSort(s,n);

    cout<<"\tID";
    cout<<"\tName";
    cout<<"\tCredit";
    cout<<"\tCGPA";
    cout<<endl;

    for(i=0; i<n; i++)
    {
        s[i].output();
    }
    cout<<endl;
    return 0;
}