源代码
#include <stdio.h>
int main()
{
int num = 1, sign = 1, term = 1;
double sum = 1.00;
while (num <= 20)
{
sign = -sign;
term = term + 2;
sum += ( (double) sign / term);
num++;
}
printf("前20项和=%0.3f", sum);
}
运行结果图
编程求解分数序列S=1-1/3+1/5-1/7+1/9-…前20项之和。
阅读 168
2022-01-09
#include <stdio.h>
int main()
{
int num = 1, sign = 1, term = 1;
double sum = 1.00;
while (num <= 20)
{
sign = -sign;
term = term + 2;
sum += ( (double) sign / term);
num++;
}
printf("前20项和=%0.3f", sum);
}
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