In fact, I belive
for(int a = 0; a<10; a++)
{
printf("%d\n",a);
}
is equivalent to
{
int a = 0;
while(a<10)
{
printf("%d\n",a);
a++;
}
Your other code,
{
int a = 0;
while(a++,a<10)
{
printf("%d\n",a);
}
}
doesn't run the printf statement with a = 0.
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