题解 | 斐波那契数列
斐波那契数列
https://www.nowcoder.com/practice/ee5d403c1172487f8c7915b3c3d924c6
#include <bits/stdc++.h>
using namespace std;
int main(){
int a = 1,b = 1,c = 1;
int n;cin>>n;
for(int i = 3;i<=n;i++){
c = a + b;
a = b;
b = c;
}
cout<<c;
return 0;
}
定义三个变量，c为当前项,b为前一项，a为前二项，然后反复迭代就好了
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