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#include<iostream>
using namespace std;
viod calc();
viod calc(double parameter_1);
viod calc(double parameter_1,double parameter_2);
viod calc(double parameter_1,double parameter_2,double parameter_3);
int main()
{
...
return 0;
}
viod calc()
{
cout<<"请输入数值!"<<endl;
}
viod calc(double parameter_1)
{
cout<<parameter_1*parameter_1<<endl;
}
viod calc(double parameter_1,double parameter_2)
{
cout<<parameter_1*parameter_2<<endl;
}
viod calc(double parameter_1,double parameter_2,double parameter_3)
{
cout<<parameter_1+parameter_2+parameter_3<<endl;
}
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