diff --git a/1 b/1
new file mode 100644
index 0000000..190086b
--- /dev/null
+++ b/1
@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctime>
+
+
+#define SIZE 1024
+
+// the add function
+void vector_add(float* A, float* B, float* C, int size) {
+    for (int i = 0; i < size; i++) {
+        C[i] = A[i] + B[i];
+    }
+}
+
+int main() {
+    // define the size
+    float A[SIZE];
+    float B[SIZE];
+    float C[SIZE];
+
+    // use 'for' to random
+    for (int i = 0; i < SIZE; i++) {
+        A[i] = (float)(rand() % 100);
+        B[i] = (float)(rand() % 100);
+    }
+
+    clock_t start_time, end_time;
+    // get the start time
+    start_time = clock();
+
+    // use the function
+    vector_add(A, B, C, SIZE);
+
+    // get the end time
+    end_time = clock();
+
+    // get the time and transform to secound
+    double elapsed_time = ((double)(end_time - start_time)) / CLOCKS_PER_SEC;
+    printf("基础向量加法的运行时间：%f 秒\n", elapsed_time);
+
+    return 0;
+}
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