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C/C++ code:
/*¼ÆËã1-1/2+1/3-1/4+¡+1/99-1/100+¡,Ö±µ½×îºóÒ»ÏîµÄ¾ø¶ÔֵСÓÚ10-4Ϊֹ¡£*/
#include <stdio.h>
#include <math.h>
int main(void)
{
float sum=0,n=1,i=1;
while(fabs(i/n)>1e-4)
{
sum += i/n;
n++;
i = -i;
}
printf("%f\n",sum);
return 0;
}
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[code=C/C++][/code]
#include <iostream>
using namespace std;
void main()
{
int i=1;
double m,sum;
while(m> =10e-4)
{
if(i%2==0)
{m=1/i;sum=sum-m;}
else
{m=1/i;sum=sum+m;}
i++;
}
cout < <sum < <endl;
}
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