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#include <ctype.h>
#include <iostream>
#include <fstream>
#include <math.h>
#include <conio.h>
using namespace std;
char Determinar ()
{
char a;
cin>>a;
if ((a>=48)&&(a<=57))
cout<<"es un numero";
else
cout<<"es ua letra";
return 0;
}
int main ()
{
cout<< Determinar ();
system("PAUSE");
return 0;
}

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Programa para leer letras

  • 1. #include <ctype.h> #include <iostream> #include <fstream> #include <math.h> #include <conio.h> using namespace std; char Determinar () { char a; cin>>a; if ((a>=48)&&(a<=57)) cout<<"es un numero"; else cout<<"es ua letra"; return 0; } int main () { cout<< Determinar (); system("PAUSE"); return 0; }