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斐波那契求第几项数.cpp

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+//斐波拉契//求第几项的数 
+#include<stdio.h>
+int Fibon1(int n){ 
+if (n == 1 || n == 2) {  
+return 1; 
+} else { 
+ return Fibon1(n - 1) + Fibon1(n - 2);
+ }
+}
+int main(){
+ int n = 0;
+ int ret = 0; 
+scanf("%d", &n);
+ ret = Fibon1(n); 
+printf("ret=%d",ret); 
+return 0;
+}