#include <string.h>
#include <ctype.h>
#include <iostream>

using namespace std;

int Mayusculas(char *texto)
{
    int liCount;

    for(liCount=0;liCount<strlen(texto);liCount++)
    {
        texto[liCount] = (char)toupper(texto[liCount]);
    }

    return liCount;
}

int main ()
{
    char str[] = "Hello world";
    int length = Mayusculas(str);
    cout << '"' << str << '"' << ", " << length << " characters." << endl;
    return 0;
}