CPP
cpp
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#include <iostream>
using namespace std;
void add(int a,int b)
{
cout << a << " + " << b << " = " << a + b;
}
void add(int a,int b,int c)
{
cout << a << " + " << b << " + " << c << " = " << a + b + c;
}
int main()
{
cout << "Enter 2 or 3 \n";
int op;
cin >> op;
if(op == 2)
add(1,2);
else
add(1,2,3);
return 0;
}
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OUTPUT
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