diff --git a/Yang/1.c b/Yang/1.c
new file mode 100644
index 0000000..cb92f06
--- /dev/null
+++ b/Yang/1.c
@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+#define SIZE 10000000
+
+void vectorAdd(float* A, float* B, float* C, int size) {
+    int i;
+    for (i = 0; i < size; ++i) {
+        C[i] = A[i] + B[i];
+    }
+}
+
+int main() {
+    float* A = (float*)malloc(SIZE * sizeof(float));
+    float* B = (float*)malloc(SIZE * sizeof(float));
+    float* C = (float*)malloc(SIZE * sizeof(float));
+    if (A == NULL || B == NULL || C == NULL) {
+        return 1; 
+    }
+
+    // float A[SIZE], B[SIZE], C[SIZE];
+    srand((unsigned)time(NULL));
+    int i;
+    for (i = 0; i < SIZE; ++i) {
+        A[i] = rand() % 100; 
+        B[i] = rand() % 100;
+    }
+
+
+    clock_t start_time = clock();
+
+    vectorAdd(A, B, C, SIZE);
+
+    clock_t end_time = clock();
+    double time = (double)(end_time - start_time) / CLOCKS_PER_SEC;
+
+    printf("%f\n", time);
+
+    // for (i = 0; i < SIZE; ++i) { 
+    //     printf("A[%d] + B[%d] = C[%d] -> %f + %f = %f\n", i, i, i, A[i], B[i], C[i]);
+    // }
+
+    free(A);
+    free(B);
+    free(C);
+    return 0;
+}