Have a simple while loop and trying to make it to a for loop
i=1
while(i<=128)
{ printf("%d",i);
i*=2;
}
Here is my for loop
for (i=1;i<=128;i++)
{
printf("%d",i);
i*=2;
}
How come it does not give the same output? The first one would print 1248163264128, the for loop print 137153163127?
The for loop doubles i and then increments it. The while loop only doubles it.
Change the for loop to this:
for (i=1;i<=128;i*=2) {
printf("%d", i);
}
Because you're also incrementing i in the for-loop. In your original while-loop, i is never incremented.
Try this:
for (i=1; i<=128; i*=2) // Remove i++, move the i*=2 here.
{
printf("%d",i);
}
for(i=1; i<=128; i*=2)! Even worse, this answer strengthens the idea that a for loop can only increment a loop variable, which the OP seems to have already.
for (i=1;i<=128;i*=2)
{
printf("%d",i);
}
In the while loop you didn't increment i, but in your for loop you are using
for (i=1;i<=128;i++)
{
printf("%d",i);
i*=2;
}
You are incrementing i with one and multiplying i by 2 in each iteration of your loop. This is the reason you are getting weird result.
Try the following code for the same result as while loop is generating.
for (i = 1; i <= 128; i *= 2)
{
printf("%d",i);
}
i*=2infor (i=1;i<=128;i*=2)