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2008-11-03T05:18:46Z

5 revision(s)

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==Intro==

To obtain the time required for computer to run an addition on different type of values such as short, long, double, float, integer.

==Codes==
<pre>
#include <stdio.h>
#include <time.h>

int main()
{

short total = 0;
long t;

t = clock();

for (long i = 0; i<1000000000; i++) {
total++;
}

t = (clock() - t);
//printf("%ld\n", total);
printf("%ld /%ld\n", t, CLOCKS_PER_SEC);

return 0;
}
</pre>

==Result==
int - 2.192sec

double - 8.262sec

float - 8.629sec

long - 2.404sec

short - 2.583sec

==Summary==
The following problem was encountered:
* 1: Had no idea of how to use the function clock(), so went on google to search for appropriate use of the function. The outcome were that clock() returns a value in "ticks", of how long the program being started for, every time it is called and assigned to a value.
* 2: After playing around with clock(), it always returns a value of 0, I realized the ammount of addition has to be enlarged in order to obtain more accurate and measurable value of clock(), so the loop were changed to be done 1billion times.
* 3: The loops and defining t as clock() took time as well within the program, so the outcome of the result cannot be accurate, as the time taken to run through the loop was counted for. However the a comparative outcome can be drawn, as double and float takes a longer time to add than int, long and short.

SE250:lab-1:twon069 - Revision history

Mark: 5 revision(s)