有一数列:2/1,3/2,5/3,8/5,…求出这个数列的前20项之和 c语言
时间: 2023-12-13 14:25:20 浏览: 67
以下是用C语言实现该数列求和的代码:
```c
#include <stdio.h>
int main() {
double sum = 0, a = 2, b = 1, c;
for(int i = 1; i <= 20; i++) {
sum += a / b;
c = a + b;
b = a;
a = c;
}
printf("数列的前20项之和为:%f", sum);
return 0;
}
```
运行代码,即可输出该数列的前20项之和。例如,该数列的前20项之和约为32.6603。
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