我如何在c中测量一个函数的执行时间，我可以打印处理器记号吗？

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

void function_to_measure()
{
    // 函数代码
}

int main()
{
    clock_t start_time, end_time;
    double execution_time;

    start_time = clock();

    // 调用待测量的函数
    function_to_measure();

    end_time = clock();

    execution_time = (double)(end_time - start_time) / CLOCKS_PER_SEC;

    printf("函数执行时间：%lf秒\n", execution_time);

    return 0;
}

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

void function_to_measure()
{
    // 函数代码
}

int main()
{
    time_t start_time, end_time;
    double execution_time;

    start_time = time(NULL);

    // 调用待测量的函数
    function_to_measure();

    end_time = time(NULL);

    execution_time = difftime(end_time, start_time);

    printf("函数执行时间：%lf秒\n", execution_time);

    return 0;
}