Exemplo

#include <iostream>

#include <cstdlib>

#include <cctype>

#include <string>

using namespace std;

int main () {

char vt[10];
int i;

printf("informe a string: ");
gets(vt);
puts(vt);

for (i = 0; i < strlen(vt); i++)
  if (isupper(vt[i]))
    printf(" %c ", vt[i]);        //IMPRIME SOMENTE OS CARACTERES MAIUSCULOS
system("PAUSE");
return EXIT_SUCCESS;

}

— geyson breno 2011/04/07 07:30