diff --git a/斐波那契数列 b/斐波那契数列
new file mode 100644
index 0000000..8de59e9
--- /dev/null
+++ b/斐波那契数列
@@ -0,0 +1,17 @@
+#include<stdio.h>
+ int main()
+ {
+  int f1 = 1, f2 = 1, f3;
+  int i, n;
+  scanf("%d", &n);
+  if (n == 1 || n == 2) 
+  f3 = 1; 
+  for(i = 3; i <= n; i ++)
+  {
+    f3 = f1 + f2;
+    f1 = f2;
+    f2 = f3;
+  }
+    printf("%d", f3);
+    return 0;
+ }
\ No newline at end of file