//求e.cpp:Definestheentrypointfortheconsoleapplication.
//e=1+1/(1+2)+1/(1+2+3)...1/(1+2+3+4...+n)
#include
#include
usingnamespacestd;
intmain(intargc,charargv[])
{
doublef(intn);
inta,i;
doublesum1=0;
cout<<"请输入一个整数:"<
cin>>a;
for(i=1;i<=a;i++)
sum1+=f(i);
cout<<"sum="<
getch();
return0;
}
doublef(intn)
{
intj;
doublesum2=0;
for(j=1;j<=n;j++)
sum2+=j;
return(1.0/sum2);
} |
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