What is the output of this program?#include using namespace

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What is the output of this program?

#include 
    using namespace std;
    int main()
    {
        typedef int number;
        number P = 25, Q = 12;
        number R = P + Q + P - Q;
        cout << R;
        return 0;
    }

1. 25
2. 12
3. 50
4. Compilation Error
5. None of these

Correct Option: C

In this program, we are manipulating the numbers and printing the result using user-defined data types.