#include <stdio.h>
#include <math.h>
int main(void)
{
float eps;
float a = 1 , s = 0;
printf("请输入一个正实数: ");
scanf("%f", &eps);
do {
s += 1 / a;
a = -1 * (fabs(a) + 4);
} while (fabs(1 / a) >= eps);
printf("和是：%f\n", s);
return 0;
}
运行结果：
[linus@Beauty ~]$ ./a.out
请输入一个正实数: 0.1
和是：0.688889
#include <math.h>
int main(void)
{
float eps;
float a = 1 , s = 0;
printf("请输入一个正实数: ");
scanf("%f", &eps);
do {
s += 1 / a;
a = -1 * (fabs(a) + 4);
} while (fabs(1 / a) >= eps);
printf("和是：%f\n", s);
return 0;
}
运行结果：
[linus@Beauty ~]$ ./a.out
请输入一个正实数: 0.1
和是：0.688889
温馨提示：内容为网友见解，仅供参考
第1个回答 2011-04-14
#include <stdio.h>
main()
{
float s,eps;
int i,j;
s = 1;
i = 1;
j = 1;
scanf("%f",&eps);
do
{
j = j*-1;
i = i+4;
s = s + 1.0*j/i;
}while(1.0/i >= eps);
printf("%f\n",s);
}
main()
{
float s,eps;
int i,j;
s = 1;
i = 1;
j = 1;
scanf("%f",&eps);
do
{
j = j*-1;
i = i+4;
s = s + 1.0*j/i;
}while(1.0/i >= eps);
printf("%f\n",s);
}
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