diff --git a/2.cpp b/2.cpp
new file mode 100644
index 0000000..c015e16
--- /dev/null
+++ b/2.cpp
@@ -0,0 +1,28 @@
+#include<stdio.h>
+#include<time.h>
+#include<iostream>
+#include<ostream>
+#include<stdlib.h>
+#include<arm_neon.h>
+#define SIZE 1024
+ void vector_add_optimized(float* A, float* B, float* C, int size){
+	for(int i=0;i<size;i+=4){
+		float32x4_t vecA=vld1q_f32(&A[i]);
+		float32x4_t vecB=vld1q_f32(&B[i]);
+		float32x4_t vecC=vaddq_f32(vecA,vecB);
+		vst1q_f32(&C[i],vecC); 
+	} 	
+}
+int main(){
+	float *A=(float*)malloc(SIZE*sizeof(float));
+	float *B=(float*)malloc(SIZE*sizeof(float));
+	float *C=(float*)malloc(SIZE*sizeof(float));
+	for(int i=0;i<SIZE;++i){
+		A[i]=rand()%100;
+		B[i]=rand()%100;
+	}
+	clock_t start=clock();
+	vector_add_optimized(A,B,C,SIZE);
+	clock_t end=clock();
+	std::cout<<"初始向量加法时间："<<double(end-start)/CLOCKS_PER_SEC<<"秒"<<std::endl; 
+}