Solution for Exercise 21-4

ex2104

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

int main()
{
    time_t tictoc;
    int x;

    for(x=0;x<20;x++)
    {
        time(&tictoc);
        printf("%2d:%ld\n",x+1,tictoc);
    }
    return(0);
}

Notes

* Setting the for loop value to 200000 on my Intel Core i7 system allowed me to see the time_t value roll over. That doesn't mean that 200,000 spins of a loop takes the system approximately one second to accomplish. Most of the delay is due to writing text to the terminal window and scrolling the screen.

Exercise ex2105 →