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Inline Functions in C++

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Program 1

#include<iostream>
using namespace std;
class MyMath
{
      public:
      int square(int n)     //implicit / default inline
     {
           return n*n;
     }
};
// inline int MyMath::square(int n)  //defination
// {
//     return n*n;
// }
int main()
{
    system("cls");
    MyMath M;
    cout<<M.square(5);   //calling
    return 0;
}

// inline int square(int r)  //defination
// {
//     return r*r;
// }
// int main()
// {
//     system("cls");
//     cout<<endl<<square(5);  // calling   
//     cout<<endl<<square(8);  // calling   
//     cout<<endl<<square(4);  // calling   

//     return 0;
// }
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