Mark: 3 revision(s)

2008-11-03T05:18:41Z

3 revision(s)

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i started with an empty project and a new file. i wrote the for loop. but i found that i don't know how to use the clock function for the timing. so i went on internet search for the clock function.then i wrote my code. but i forgot to declared the type for the time 1 and time 2. also i was thinking that the clock funtion will give the time with out me write some code find out the time1 and time2. after the build project i find out that i need to put the clk1=clock();before my for loop so when the pc start the for loop they find out the time at that instant.also i put the clk2=clock();after my for loop to count the time taken to finish the loop. i set my i maxmum to >1000 and i got 0 second. i think i got o sec becouse that my "i" was too small. so i changed my i to > 1000000000,for that i got 3.123 .
my code`\
#include <stdio.h>
#include <time.h>
int main(){
int i;
clock_t clk1;
clock_t clk2;
double time;

clk1=clock();
for (i=0;i<1000000000;i++){
i=i+1;}
clk2=clock();
time=(clk2-clk1)/(double) CLOCKS_PER_SEC;

printf("processing %d addition takes %f",i,time);
}

SE250:lab-1:hlin079 - Revision history

Mark: 3 revision(s)