What does those mean!? => for(;;) if(!i)

Question

for(;;)
if(!i)

Answer 1

Hadjer in for(;;); the semicolon indicate where the expression ends and you can have lots of statements in the for loop like for(a=1,b=2,c=3;a<5;a++)

Answer 2

Hadjer when "a" of becomes 4

Answer 3

this is a duplicate question, please kindly remove one, I haven't seen if(;;) before but if(!I) - - > "means if it's not i" execute the statement

Answer 4

*AsterisK* And when it will stop executing the for loop in these cases ??? specially when there's no decrementation !