18 lines
344 B
C++
18 lines
344 B
C++
#include<iostream>
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using namespace std;
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//函数声明
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inline double CalArea(double radius);
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int main(int argc, char const *argv[])
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{
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double r(3.0);
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double area;
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area = CalArea(r);
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cout<<area<<endl;
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system("pause");
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return 0;
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}
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//加关键字inline
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inline double CalArea(double radius)
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{
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return 3.14*radius*radius;
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} |