Ayuda con validación porfavor

[Giankaa]

Hola a todos, sucede que tengo problema con esta validación, el usuario no puede escribir ningun cosa diferente a los números de 0 a 9, sin embargo cuando ingreso por ejemplo 5asdf, si lo permite y necesito validar eso, he intentado mucho y no he podido, espero su ayuda gracias

Código (cpp) [Seleccionar] Expandir

#include <iostream>
#include <locale.h>
#include <string>
using namespace std;


//----------------------------------------------------------------------------------------------------------
string val(string n)
{
string c, p;
int i;
//
for (i = 0; i <= 10; i++)
{
c = n.at(i);
if (c != "0" && c != "1" && c != "2" && c != "3" && c != "4" && c != "5" && c != "6" && c != "7" && c != "8" && c != "9")
{
p = "0";
}
break;
}
return p;

}
//----------------------------------------------------------------------------------------------------------
void Units(string n)
{
if (n == "0") cout << "zero"; else
if (n == "1") cout << "one"; else
if (n == "2") cout << "two"; else
if (n == "3") cout << "three"; else
if (n == "4") cout << "four"; else
if (n == "5") cout << "five"; else
if (n == "6") cout << "six"; else
if (n == "7") cout << "seven"; else
if (n == "8") cout << "eight"; else
if (n == "9") cout << "nine";
}

//----------------------------------------------------------------------------------------------------------

//--------------------------------------------------------------------------------------------------------------------------------------------------
void Tens(string n)
{
char t = n.at(0);
char u = n.at(1);
n = n.substr(1, 1);
//
if (t == '0' && u != '0')
{
Units(n);
}
if (t == '1')
{
if (u == '0') cout << "ten"; else
if (u == '1') cout << "eleven"; else
if (u == '2') cout << "twelve"; else
if (u == '3') cout << "thirteen"; else
if (u == '4') cout << "fourteen"; else
if (u == '5') cout << "fifteen";
else
{
Units(n);
cout << "teen";

}

}
if (t == '2')
{
if (u == '0') cout << "twenty";
else
{
cout << "twenty- ";
Units(n);
}
}
if (t == '3')
{
if (u == '0') cout << "thirty";
else
{
cout << "thirty-";
Units(n);
}
}
if (t == '4')
{
if (6u == '0') cout << "forty";
else
{
cout << "forty- ";
Units(n);
}
}
if (t == '5')
{
if (u == '0') cout << "fifty";
else
{
cout << "fifty-";
Units(n);
}
}
if (t == '6')
{
if (u == '0') cout << "sixty";
else
{
cout << "sixty-";
Units(n);
}
}
if (t == '7')
{
if (u == '0') cout << "seventy";
else
{
cout << "seventy-";
Units(n);
}
}
if (t == '8')
{
if (u == '0') cout << "eighty";
else
{
cout << "eighty-";
Units(n);
}
}
if (t == '9')
{
if (u == '0') cout << "ninety";
else
{
cout << "ninety-";
Units(n);
}
}

}

//--------------------------------------------------------------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------------------------------------------------------------
void Hundreds(string n)
{
char t = n.at(0);
char u = n.at(1);
char v = n.at(2);
n = n.substr(1, 2);

if (t == '0')
{
Tens(n);
}
if (t == '1')
{

if (u == '0'&& v == '0') cout << "One hundred";
else
{
cout << "One hundred and ";
Tens(n);
}
}
if (t == '2')
{
if (u == '0'&& v == '0') cout << "Two hundred";
else
{
cout << "Two hundred and ";
Tens(n);
}
}
if (t == '3')
{
if (u == '0'&& v == '0') cout << "Three hundred";
else
{
cout << "Three hundred and ";
Tens(n);
}
}
if (t == '4')
{
if (u == '0'&& v == '0') cout << "Four hundred";
else
{
cout << "Four hundred and ";
Tens(n);
}
}
if (t == '5')
{
if (u == '0'&& v == '0') cout << "Five hundred";
else
{
cout << "Five hundred and ";
Tens(n);
}
}
if (t == '6')
{
if (u == '0'&& v == '0') cout << "Six hundred";
else
{
cout << "Six hundred and ";
Tens(n);
}
}
if (t == '7')
{
if (u == '0'&& v == '0') cout << "Seven hundred";
else
{
cout << "Seven hundred and ";
Tens(n);
}
}
if (t == '8')
{
if (u == '0'&& v == '0') cout << "Eight hundred";
else
{
cout << "Eight hundred and ";
Tens(n);
}
}
if (t == '9')
{
if (u == '0'&& v == '0') cout << "Nine hundred";
else
{
cout << "Nine hundred and ";
Tens(n);
}
}
}
//---------------------------------------------------------------------------------------------------------------------------------------------------

//---------------------------------------------------------------------------------------------------------------------------------------------------
void Thousands(string n)
{
char t = n.at(0);
char u = n.at(1);
char v = n.at(2);
char w = n.at(3);
n = n.substr(1, 3);

if (t == '0')
{
Hundreds(n);
}
if (t == '1')
{
if (u == '0' && v == '0'&& w == '0') cout << "One thousand";
else
{
cout << "One thousand ";
Hundreds(n);
}
}
if (t == '2')
{
if (u == '0' && v == '0'&& w == '0') cout << "Two thousand";
else
{
cout << "Two thousand ";
Hundreds(n);
}
}
if (t == '3')
{
if (u == '0' && v == '0'&& w == '0') cout << "three thousand";
else
{
cout << "three thousand ";
Hundreds(n);
}
}
if (t == '4')
{
if (u == '0' && v == '0'&& w == '0') cout << "four thousand";
else
{
cout << "four thousand ";
Hundreds(n);
}
}
if (t == '5')
{
if (u == '0' && v == '0'&& w == '0') cout << "five thousand";
else
{
cout << "five thousand ";
Hundreds(n);
}
}
if (t == '6')
{
if (u == '0' && v == '0'&& w == '0') cout << "six thousand";
else
{
cout << "six thousand ";
Hundreds(n);
}
}
if (t == '7')
{
if (u == '0' && v == '0'&& w == '0') cout << "seven thousand";
else
{
cout << "seven thousand ";
Hundreds(n);
}
}
if (t == '8')
{
if (u == '0' && v == '0'&& w == '0') cout << "eight thousand";
else
{
cout << "eight thousand ";
Hundreds(n);
}
}
if (t == '9')
{
if (u == '0' && v == '0'&& w == '0') cout << "nine thousand";
else
{
cout << "nine thousand ";
Hundreds(n);
}
}


}
//--------------------------------------------------------------------------------------------------------------------------------------------------

//--------------------------------------------------------------------------------------------------------------------------------------------------
void Thousands2(string n)
{
char t = n.at(0);
char u = n.at(1);
char v = n.at(2);
char w = n.at(3);
char x = n.at(4);
n = n.substr(1, 4);

if (t == '0')
{
Thousands(n);
}
if (t == '1')
{
string temp = "";
temp.resize(10);
temp[0] = t;
temp[1] = u;
temp[2] = v;
temp[3] = w;
temp[4] = x;
Tens(temp);
cout << " thousand ";
temp = &temp[2];
Hundreds(temp);
return;
}
if (t == '2')
{
if (u == '0' && v == '0'&& w == '0' && x == '0') cout << "twenty thousand";
else
{
cout << "twenty-";
Thousands(n);
}
}
if (t == '3')
{
if (u == '0' && v == '0'&& w == '0' && x == '0') cout << "thirty thousand";
else
{
cout << "thirty-";
Thousands(n);
}
}
if (t == '4')
{
if (u == '0' && v == '0'&& w == '0' && x == '0') cout << "forty thousand";
else
{
cout << "forty-";
Thousands(n);
}
}
if (t == '5')
{
if (u == '0' && v == '0'&& w == '0' && x == '0') cout << "fifty thousand";
else
{
cout << "fifty-";
Thousands(n);
}
}
if (t == '6')
{
if (u == '0' && v == '0'&& w == '0' && x == '0') cout << "sixty thousand";
else
{
cout << "sixty-";
Thousands(n);
}
}
if (t == '7')
{
if (u == '0' && v == '0'&& w == '0' && x == '0') cout << "seventy thousand";
else
{
cout << "seventy-";
Thousands(n);
}
}
if (t == '8')
{
if (u == '0' && v == '0'&& w == '0' && x == '0') cout << "eighty thousand";
else
{
cout << "eighty-";
Thousands(n);
}
}
if (t == '9')
{
if (u == '0' && v == '0'&& w == '0' && x == '0') cout << "ninety thousand";
else
{
cout << "ninety-";
Thousands(n);
}
}


}
//-----------------------------------------------------------------------------------------------------------------------

//--------------------------------------------------------------------------------------------------------------------------------------------------
void Thousands3(string n)
{
char t = n.at(0);
char u = n.at(1);
char v = n.at(2);
char w = n.at(3);
char x = n.at(4);
char y = n.at(5);
n = n.substr(1, 5);

if (t == '0')
{
Thousands2(n);
}
if (t == '1')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0') cout << "one hundred thousand ";
else
{
cout << "one hundred and ";
Thousands2(n);
}
}
if (t == '2')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0') cout << "two hundred thousand ";
else
{
cout << "two hundred and ";
Thousands2(n);
}
}
if (t == '3')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0') cout << "three hundred thousand";
else
{
cout << "three hundred and ";
Thousands2(n);
}
}
if (t == '4')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0') cout << "four hundred thousand";
else
{
cout << "four hundred and ";
Thousands2(n);
}
}
if (t == '5')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0') cout << "five hundred thousand";
else
{
cout << "five hundred and ";
Thousands2(n);
}
}
if (t == '6')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0') cout << "six hundred thousand";
else
{
cout << "six hundred and ";
Thousands2(n);
}
}
if (t == '7')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0') cout << "seven hundred thousand";
else
{
cout << "seven hundred and ";
Thousands2(n);
}
}
if (t == '8')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0') cout << "eight hundred thousand";
else
{
cout << "eight hundred and ";
Thousands2(n);
}
}
if (t == '9')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0') cout << "nine hundred thousand";
else
{
cout << "nine hundred and ";
Thousands2(n);
}
}


}
//-----------------------------------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------------------------------------------------------------
void Millions(string n)
{
char t = n.at(0);
char u = n.at(1);
char v = n.at(2);
char w = n.at(3);
char x = n.at(4);
char y = n.at(5);
char z = n.at(6);
n = n.substr(1, 6);

if (t == '0')
{
Thousands3(n);
}
if (t == '1')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0') cout << "one million ";
else
{
cout << "one million, ";
Thousands3(n);
}
}
if (t == '2')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0') cout << "two million ";
else
{
cout << "two million, ";
Thousands3(n);
}
}
if (t == '3')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0') cout << "three million";
else
{
cout << "three million, ";
Thousands3(n);
}
}
if (t == '4')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0') cout << "four million";
else
{
cout << "four million, ";
Thousands3(n);
}
}
if (t == '5')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0') cout << "five million";
else
{
cout << "five million, ";
Thousands3(n);
}
}
if (t == '6')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0') cout << "six million";
else
{
cout << "six million, ";
Thousands3(n);
}
}
if (t == '7')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0') cout << "seven million";
else
{
cout << "seven million, ";
Thousands3(n);
}
}
if (t == '8')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0') cout << "eight million";
else
{
cout << "eight million, ";
Thousands3(n);
}
}
if (t == '9')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0') cout << "nine million";
else
{
cout << "nine million, ";
Thousands3(n);
}
}


}
//-----------------------------------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------------------------------------------------------------
void Millions2(string n)
{
char t = n.at(0);
char u = n.at(1);
char v = n.at(2);
char w = n.at(3);
char x = n.at(4);
char y = n.at(5);
char z = n.at(6);
char z2 = n.at(7);
n = n.substr(1, 7);

if (t == '0')
{
Millions(n);
}
if (t == '1')
{//11
string temp = "";//112000
temp.resize(10);
temp[0] = t;
temp[1] = u;
temp[2] = v;
temp[3] = w;
temp[4] = x;
temp[5] = y;
temp[6] = z;
temp[7] = z2;
Tens(temp);
cout << " million ";
temp = &temp[2];//12000000
Thousands3(temp);
return;
}
if (t == '2')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0') cout << "twenty million ";
else
{
cout << "twenty million ";
Millions(n);
}
}
if (t == '3')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0') cout << "thirty million";
else
{
cout << "thirty million ";
Millions(n);
}
}
if (t == '4')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0') cout << "forty million";
else
{
cout << "forty million ";
Millions(n);
}
}
if (t == '5')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0') cout << "fifty million";
else
{
cout << "fifty million ";
Millions(n);
}
}
if (t == '6')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0') cout << "sixty million";
else
{
cout << "sixty million ";
Millions(n);
}
}
if (t == '7')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0') cout << "seventy million";
else
{
cout << "seventy million ";
Millions(n);
}
}
if (t == '8')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0') cout << "eighty million";
else
{
cout << "eighty million ";
Millions(n);
}
}
if (t == '9')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0') cout << "ninety million";
else
{
cout << "ninety million ";
Millions(n);
}
}


}
//-----------------------------------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------------------------------------------------------------------------
void Millions3(string n)
{
char t = n.at(0);
char u = n.at(1);
char v = n.at(2);
char w = n.at(3);
char x = n.at(4);
char y = n.at(5);
char z = n.at(6);
char z2 = n.at(7);
char z3 = n.at(8);
n = n.substr(1, 8);

if (t == '0')
{
Millions2(n);
}
if (t == '1')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0') cout << "one hundred million ";
else
{
cout << "one hundred and ";
Millions2(n);
}
}
if (t == '2')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0') cout << "two hundred million ";
else
{
cout << "two hundred and ";
Millions2(n);
}
}
if (t == '3')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0') cout << "three hundred million";
else
{
cout << "three hundred and ";
Millions2(n);
}
}
if (t == '4')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0') cout << "four hundred million";
else
{
cout << "four hundred and ";
Millions2(n);
}
}
if (t == '5')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0') cout << "five hundred million";
else
{
cout << "five hundred and ";
Millions2(n);
}
}
if (t == '6')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0') cout << "six hundred million";
else
{
cout << "six hundred and ";
Millions2(n);
}
}
if (t == '7')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0') cout << "seven hundred million";
else
{
cout << "seven hundred and ";
Millions2(n);
}
}
if (t == '8')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0') cout << "eight hundred million";
else
{
cout << "eight hundred and ";
Millions2(n);
}
}
if (t == '9')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0') cout << "nine hundred million";
else
{
cout << "nine hundred and ";
Millions2(n);
}
}


}
//-----------------------------------------------------------------------------------------------------------------------

//--------------------------------------------------------------------------------------------------------------------------------------------------
void Millions4(string n)
{
char t = n.at(0);
char u = n.at(1);
char v = n.at(2);
char w = n.at(3);
char x = n.at(4);
char y = n.at(5);
char z = n.at(6);
char z2 = n.at(7);
char z3 = n.at(8);
char z4 = n.at(8);
n = n.substr(1, 9);

if (t == '0')
{
Millions3(n);
}
if (t == '1')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0' && z4 == '0') cout << "one billion ";
else
{
cout << "one billion, ";
Millions3(n);
}
}
if (t == '2')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0' && z4 == '0') cout << "two billion ";
else
{
cout << "two billion, ";
Millions3(n);
}
}
if (t == '3')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0' && z4 == '0') cout << "three billion";
else
{
cout << "three billion, ";
Millions3(n);
}
}
if (t == '4')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0' && z4 == '0') cout << "four billion";
else
{
cout << "four billion, ";
Millions3(n);
}
}
if (t == '5')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0' && z4 == '0') cout << "five billion";
else
{
cout << "five billion, ";
Millions3(n);
}
}
if (t == '6')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0' && z4 == '0') cout << "six billion";
else
{
cout << "six billion, ";
Millions3(n);
}
}
if (t == '7')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0' && z4 == '0') cout << "seven billion";
else
{
cout << "seven billion, ";
Millions3(n);
}
}
if (t == '8')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0' && z4 == '0') cout << "eight billion";
else
{
cout << "eight billion, ";
Millions3(n);
}
}
if (t == '9')
{
if (u == '0' && v == '0'&& w == '0' && x == '0' && y == '0' && z == '0' && z2 == '0' && z3 == '0' && z4 == '0') cout << "nine billion";
else
{
cout << "nine billion, ";
Millions3(n);
}
}


}
//-----------------------------------------------------------------------------------------------------------------------

int main()
{
int i, c;
string num, n, r, g;
//
cout << "===============================\n";
cout << "= Convert numbers to letters  =\n";
cout << "===============================\n\n";
do
{

do
{
cout << "Type a number up to 10 digits to convert in Written English: "; getline(cin, n);
c = n.size();
if (c == NULL) g = "0";
else g = val(n);
} while (c > 10 || g == "0");

switch (n.length())
{
case 1: Units(n); break;
case 2: Tens(n); break;
case 3: Hundreds(n); break;
case 4: Thousands(n); break;
case 5: Thousands2(n); break;
case 6: Thousands3(n); break;
case 7: Millions(n); break;
case 8: Millions2(n); break;
case 9: Millions3(n); break;
case 10: Millions4(n); break;
}

cout << endl;
cout << "Another number?:(Y/N) "; getline(cin, r);
} while (r == "y" || r == "Y");

cout << "\n\nHOMEWORK # 2\nAuthor: Giancarlo Rosero Portillo\nto: Jesus Insuasti\n";
system("pause");
return 0;
}

[eduardo1012]

Código (c) [Seleccionar] Expandir

char op;
op=getch();

Utiliza getch si solo vas a escribir un numero, asi evitas al usuario tener que escribir de mas. O limitalo a que pueda escribir solo un caracter

[engel lex]

Código (cpp) [Seleccionar] Expandir

int n;
cin >> n;
if(cin.fail()){ //cin falla si no coinciden los tipos
   cin.clear();
   cin.ignore(1024, '\n'); //ignorar el contenido que queda
   cout << "nope, eso no es numero" << endl;
}else{
// El número
}

Siento que tu código tiene unas 800 lineas de más, pero me imagino que son requisitos en la forma de hacerlo