Can you combine the following two statements into one?

   char *p; 
   p

Can you combine the following two statements into one?

   char *p; 
   p = (char*) malloc(100);

2) The operator used to get value at address stored in a pointer variable is

3) What will be the output of the program If the integer is 4bytes long?

 #include<stdio.h>
 int main()
 {
     int ***r, **q, *p, i=8;
     p = &i;
     q = &p;
     r = &q;
     printf("%d, %d, %d\n", *p, **q, ***r);
     return 0;
 }

4) How many bytes are occupied by near, far and huge pointers (DOS)?

5) What will be the output of the program ?

 #include<stdio.h>
 int main()
 {
     char str[20] = "Hello";
     char *const p=str;
     *p='M';
     printf("%s\n", str);
     return 0;
 }