C++ program to find the factorial of a no. by defining the member functions outside the class.
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#include<iostream> using namespace std; class T4Tutorials_Factorial_Number { private: int n,n1,f=1; public: void input(); void calc(); void display(); }; void T4Tutorials_Factorial_Number::input() { cout<<"Please Enter a no.:”<<endl; cin>>n; } void T4Tutorials_Factorial_Number::calc() { n1=n; if(n==0||n==1) cout<<" Factorial of "<<n<<" is 1”<<endl; else { while(n>0) { f=f*n; n--; } } } void T4Tutorials_Factorial_Number::display() { cout<<" The Factorial of "<<n1<<" is "<<f; } int main () { T4Tutorials_Factorial_Number object; object.input(); object.calc(); object.display(); } |
Output
Please Enter a no.: 4
The Factorial of 4 is 24
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