ispit

#include <iostream>
#include <stdlib.h>
#include <stdio.h>

using namespace std;

int main()
{
    // 1

    /*char rijec[21];
    int b=0;

    while(true)
    {
        gets(rijec);
        for(int i=0;rijec[i]!='\0';i++)
        {
            b++;
        }
        cout<<b<<endl;
        if(rijec[0]<'A' || rijec[0]>'Z')
        {
            b=0;
            continue;
        }
        else if(rijec[b-1]<'A' || rijec[b-1]>'Z')
        {
            b=0;
            continue;
        }

        else
            break;
    }*/

    // 2

    /*char recenica[100];
    int b=1;
    gets(recenica);

    for(int i=0;recenica[i]!='\0';i++)
    {
        if(recenica[i] == ' ')
        {
            if(recenica[i+1]==' ')
                continue;
            b++;
        }

    }

    cout<<"Recenica se sastoji od "<<b<<" rijeci."<<endl;*/

    // 3

    /*char rijec[20];
    char rijec2[20];
    gets(rijec);
    int brojac=0;

    for(int i=0;rijec[i]!='\0';i++)
    {
        brojac++;
    }

    //cout<<brojac<<endl;

    int j=brojac;

    for(int i=0;i<brojac;i++)
    {
        rijec2[j-1]=rijec[i];
        j--;
    }

    //cout<<j<<endl;
    for(int i=0;i<brojac;i++)
    {
        rijec[i]=rijec2[i];
    }

    //cout<<rijec2<<endl;

    puts(rijec);*/

    // 4

    char recenica[100];
    gets(recenica);
    int brojac=0;

    for(int i=0;recenica[i]!='\0';i++)
    {
        if(recenica[i]=='a' || recenica[i]=='e' ||recenica[i]=='i' ||recenica[i]=='o' ||recenica[i]=='u' || recenica[i]=='A' || recenica[i]=='E' ||recenica[i]=='I' ||recenica[i]=='O' ||recenica[i]=='U')
        {
            brojac++;
            if(recenica[i]>='A' && recenica[i]<='Z')
                recenica[i]=recenica[i]+32;
        }
        else
        {
            if(recenica[i]!=' ' && (recenica[i]<'A' || recenica[i]>'Z'))
            {
                recenica[i]=recenica[i]-32;
            }
        }

    }

    cout<<"Recenica ima "<<brojac<<" samoglasnik/a."<<endl;
    cout<<recenica<<endl;


    return 0;
}