C Programming Questions with Explanation

Q::What will be the output::

void main()
{
              static char ch=1;
              while (ch++)
               {
                          printf("℅d",ch);
               }
}

(A) error
(B) It will run infinite time
(C) Prints  2,3,4...127 ,-128-127-126...-1
(D) Prints  2,3,4...127, -128-127-126...-1,0
     
Answer:: (D)

Explanation::

Firstly ch= 1 so , control enter the while loop and ch is incremented by 1
and ch =2    gets printed
going on this way the value of ch will become 127 and again it will be incremented by 1 which will make it -127 which is again true in C Language then -126,-125... -1,0 also get printed . Before printing value of ch is always incremented by 1.