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step1.c

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+#include <stdio.h>
+#include <time.h>
+#include <stdlib.h>
+
+#define SIZE 1024 
+
+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() {
+    float A[SIZE], B[SIZE], C[SIZE];
+    
+    for (int i = 0; i < SIZE; i++) {
+        A[i] = rand() % 100;
+        B[i] = rand() % 100;
+    }
+
+    clock_t start = clock();
+    vector_add(A, B, C, SIZE);
+    clock_t end = clock();
+    
+    double time_taken = (double)(end - start) / CLOCKS_PER_SEC;
+    printf("基础的向量加法: %lf seconds\n", time_taken);
+
+    return 0;
+}