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“计算太阳和地球间的万有引力”

//Example1-2:计算太阳和地球间的万有引力<br /> #include<iostream.h><br /> double grav (double m1, double m2, double distance)<br /> ﹛<br />     double g, G=6.67259E-11;<br />  g=G*m1*m2/(distance*distance);<br />     return g<br /> ﹜<br />  void main ()<br /> ﹛<br />     double g, Msum=7.987E30,Mearth=5.975E24;<br />  g=grav(Msun, Mearth, 1.495E11);<br />  cout<<"The gravitation between sun and earth is"<<g<<"N."<<end|;<br /> ﹜
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