Measure the time of a function in seconds

measurement_of_time.c

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

void fun()
{
    printf("fun() starts \n");
    printf("Press enter to stop fun \n");
    while(1)
    {
        if (getchar())
            break;
    }
    printf("fun() ends \n");
}


int main()
{
    // Calculate the time taken by fun()
    clock_t t;
    t = clock();
    fun();
    t = clock() - t;
    double time_taken = ((double)t)/CLOCKS_PER_SEC; // in seconds
 
    printf("fun() took %f seconds to execute \n", time_taken);
    getch();
    return 0;
}