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Giai_Thua.cpp
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// Giai_Thua.cpp #include <iostream> using namespace std; int main() { int n, gt = 1; cout<<"Nhap n: "; cin>>n; if (n == 0) gt = 1; for (int i = 1; i <= n; i++) { gt = gt * i; } cout<<n<<"! = "<<gt; return 0; }