1º - 2006.2

#include <stdio.h>
#include <conio.h>


    int soma (int n)
    {
        int u, d, s;

        u = n%10;
        d = n/10;
        s= u+d;
        return s;
    }


    int extenso (int n)
    {
            int u, d, s;

        u = n%10;
        d = n/10;

        if (d == 2 && u!=0)
        printf ("\n Vinte e ");
        if (d == 3 && u!=0)
        printf ("\n Trinta e ");
        if (d == 4 && u!=0)
        printf ("\n Quarenta e ");
        if (d == 2 && u==0)
        printf ("\n Vinte  ");
        if (d == 3 && u==0)
        printf ("\n Trinta");
            if (d == 4 && u==0)
        printf ("\n Quarenta");

        if ( u == 1)
        printf ("um");
        if ( u == 2)
        printf ("dois");
        if ( u == 3)
        printf ("tres");
        if ( u == 4)
        printf ("quatro");
        if ( u == 5)
        printf ("cinco");
        if ( u == 6 )
        printf ("seis");
        if ( u == 7 )
        printf ("sete");
        if ( u == 8 )
        printf ("oito");
        if ( u == 9 )
        printf ("nove");

        }

main ()
{
    int n, i, z;


    do {
        printf ("Digite um numero:   ");
        scanf ("%d", &n);
    } while (n<20 || n>49);

    z = soma(n);
    printf ("A soma dos algarismos de %d e':  %d", n, z);
    extenso(n);
    return 0;
}