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43 lines
861 B
C++
43 lines
861 B
C++
Another example of a conversion function
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#include <iostream>
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using namespace std;
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class Power {
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double b;
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int e;
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double val;
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public:
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Power(double base, int exp);
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Power operator+(Power o) {
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double base;
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int exp;
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base = b + o.b;
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exp = e + o.e;
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Power temp(base, exp);
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return temp;
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}
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operator double() { return val; } // convert to double
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};
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Power::Power(double base, int exp)
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{
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b = base;
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e = exp;
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val = 1;
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if(exp==0)
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return;
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for( ; exp>0; exp--)
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val = val * b;
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}
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int main()
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{
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Power x(4.0, 2);
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double a;
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a = x; // convert to double
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cout << x + 100.2; // convert x to double and add 100.2
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cout << "\n";
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Power y(3.3, 3), z(0, 0);
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z = x + y; // no conversion
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a = z; // convert to double
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cout << a;
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return 0;
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}
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