HOTEN1 C++

#include <bits/stdc++.h>
using namespace std;

int n,i,d,dem=0,ma=-9;
string s;

void nhap()
{
    getline(cin,s);
    n=s.length();
}
char viet_hoa(char c)
{
    if('a'<=c&&c<='z')
    {
        int x=int(c);
        x=x-32;
        char c1=char(x);
        return c1;
    }
    else
        return c;
}

void cau1()
{
    for (i=0;i<=n-1;i++)
    {
       cout<<viet_hoa(s[i]);
    }
}
void cau2()
{
    cout << viet_hoa(s[0]);
    for (i=1;i<n;i++)
    {
        if (s[i-1]==' ') cout<<viet_hoa(s[i]);
        else cout<<s[i];
    }
}


int main()
{
    freopen("hoten1.inp","r",stdin);
    freopen("hoten1.out","w",stdout);
    nhap();
    cau1();
    cout << endl;
    cau2();
}