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#include <iostream>
using namespace std;
int main() {
int n, suma = 0;
cout << "Introduceti un numar de maxim 4 cifre: ";
cin >> n;
if (n < 0 || n > 9999) {
cout << "Numarul introdus trebuie sa fie intre 0 si 9999.";
return 0;
}
while (n > 0) {
suma += n % 10;
n /= 10;
}
cout << "Suma cifrelor numarului introdus este: " << suma;
return 0;
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