c语言写斐波那契数列使用递归和递推

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英文回答:
As amon mathematical problem, the Fibonacci series is defined as follows: F(0) = 0, F(1) = 1, F(n) = F(n—1) + F(n—2)。

This means that the n element of the array is equal to the sum of its first two elements。

In the process of calculating the Fibonacci series, we should consider the way in which the regression and the extrapolation are carried out separately。

For government policymakers, understanding and using the formula of the Fibonacci series can help us to better understand and analyse the patterns of socio—economic development and provide an important reference for the development of science's paths, approaches and policies。

斐波那契数列作为一种常见的数学问题,其定义如下:F(0) = 0, F(1) = 1, F(n) = F(n-1) + F(n-2)。

这意味着数列的第n个元素等于其前两个元素之和。

在实现斐波那契数列的计算过程中,我们应当分别考虑递归和递推的方式。

对于政府决策者而言,理解并运用斐波那契数列的计算方法,能够帮助我们更好地理解和分析社会经济发展的规律,并为制定科学的发展路线、方针和政策提供重要参考。

Let's see how it goes back。

Recursion is one of its own methods of calling, and the retrogression of the Fibonacci
columns is the direct retrogression by definition。

The specific code is as follows: in this segment, the FiberacciRecursion function achieves the recursive calculation of the Fibonacci columns, and the main function captures the position to be calculated by way of input from the user and outputs the calculation。

咱们来看看用递归的方法。

递归就是自己调用自己的一种方法,斐波那契数列的递归实现就是根据定义直接进行递归调用。

具体代码是这样的:在这段代码中,fibonacciRecursion函数实现了斐波那契数列的递归计算,主函数中通过用户输入的方式获取要计算的位置,并输出计算结果。

We will use the incremental method of calculation。

Gradually,it is a step—by—step calculation of the next element, based on the known element。

For the Fibonacci series, we calculate the value of each element directly by definition。

The specific codes are as follows:
```c '
@include 《stdio。

h》
Int fibonaciation(int n){
Int a = 0, b = 1, c, i;
If (n = 0)
I'm sorry。

for (i = 2; i 《 = n; i ++){
c = a + b;
a = b;
b = c;
♪ I'm sorry ♪
I'm sorry。

♪ I'm sorry ♪
Intmain(){
I don't know。

printf ( "Please enter a number:");
Scanf ( "d", n);
printf ( "The number of d—places in the Fibonacci series is d、n", n, fibonaciation(n));
Return 0;
♪ I'm sorry ♪
`````
In the above code, the Fibonaciation function performs an incremental calculation of the Fibonacci columns, while the main function captures the position to be calculated by the user input and outputs the calculation result。

我们将采用递推的方法来进行计算。

递推是一种逐步计算下一个元素的方法,基于已知的元素。

对于斐波那契数列,我们将直接根据定义来计算每个元素的值。

具体的代码如下所示:
```c
#include <stdio.h>
int fibonacciIteration(int n) {
int a = 0, b = 1, c, i;
if (n == 0)
return a;
for (i = 2; i <= n; i++) {
c = a + b;
a = b;
b = c;
}
return b;
}
int main() {
int n;
printf("请输入一个数字:");
scanf("d", n);
printf("斐波那契数列中第d个位置的数为d\n", n,
fibonacciIteration(n));
return 0;
}
```
在以上代码中,fibonacciIteration函数实现了斐波那契数列的递推计算,而主函数通过用户输入的方式获取要计算的位置,并输出计算结果。

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