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C++ : Calling a function for Sum

 #include <iostream>

using namespace std;
int sum( int a,int b)
    {
        int c;
        c=a+b;
        return c;
    }
int main()
{
   
    int a,b;
    cin>>a>>b;
    cout<<sum(a,b);
    return 0;
}
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