深入理解计算机系统的CPE如何计算，有详细参考代码吗？

Question

深入理解计算机系统的CPE如何计算，有详细参考代码吗

Answer 1

#include <stdio.h>
#include <time.h>

int sum(int* a, int n) {
    int sum = 0;
    for (int i = 0; i < n; i++) {
        sum += a[i];
    }
    return sum;
}

int main() {
    int a[10000];
    for (int i = 0; i < 10000; i++) {
        a[i] = i;
    }

    clock_t start = clock();
    int result = sum(a, 10000);
    clock_t end = clock();

    double cpu_time_used = ((double) (end - start)) / CLOCKS_PER_SEC;
    double cpe = cpu_time_used / 10000;

    printf("Sum: %d\n", result);
    printf("Time used: %f seconds\n", cpu_time_used);
    printf("CPE: %f\n", cpe);

    return 0;
}