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that was my first experience to get some information about my questions from someone in another country. i become more confident about expressing myself and tell my problem in english.
what i...

thank you, thank you ,thank you a lot...you are genious :) finally i finished my homework by the great help of you and send it tomorrow..thnks again:)

thanks for all your helpings, really i appriciate it,thanks a lot..
can i have one more question..:)system is dual core, so to see multitasking i need to execute the program four times..i try to...

start D:\timer\Debug\timer.exe
start D:\timer\Debug\timer.exe

i just wrote these codesin my batch file sometimes it make them run at the same time but sometimes at different times..so i am not...

for(i=0;i<20000000;i++)
{
for(j=0;j<1000;j++)

a=a+i;
}

i just wrote a for loop and i takes about 100 sec and i wrote a batch to make that process run twice ..but our...

for(i=0;i<20000000;i++)
{
for(j=0;j<1000;j++)

a=a+i;
}
i just wrote a for loop and i takes about 100 sec and i wrote a batch to make that process run twice ..but our...

yes you are right:) but we know how to calculate it, but the teacher expects us to see that if I run a program twice, the running time of it(if there is a single cpu) should be twice more than its...

in that problem, if we assume the switching process takes 1 milisecond, can we calculate the length of a quantum