For

Question

#include <stdio.h>
int main() {
int a=6;
int b=9;
for (;;){
if (a>=b) break;
printf ("%d", a++);
}
}
What does (;;) do?

Answer 1

You have declared two variables a and b after that you have used one loop i i think here u missed something initialisation of loop i supposed loop working infinite times inside loop u have written condition a>=b means 6>=9 and a is increasing if this condition will be true then you will be exit from loop becz u used break statement otherwise a value will be print everytime.
When 6>=9 false so if condition won't execute
And printf will print 6 then a++
next time condition will be
7>=9 false
Again print a value then a++
8>=9 false
When it will reach till 9 here condition will be true and u will exit from loop