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) What will be the output of the following C code?

#include <stdio.h>
 int main()
 {
    char *p = NULL;
    char *q = 0;
    if (p)
 	  printf(" p ");
    else
       printf("nullp");
    if (q)
       printf("q\n");
    else
       printf(" nullq\n");
 }

3) What will be the output of the program ?

 #include<stdio.h>
 int main()
 {
     int i=3, *j, k;
     j = &i;
     printf("%d\n", i**j*i+*j);
     return 0;
 }

4) What will be the output of the program ?

  #include<stdio.h>
  int main()
 {
     int x=30, *y, *z;
     y=&x; /* Assume address of x is 500 and integer is 4 byte size */
     z=y;
     *y++=*z++;
     x++;
     printf("x=%d, y=%d, z=%d\n", x, y, z);
     return 0;
 }

5) What will be the output of the program ?

 #include<stdio.h>
 int main()
 {
     static char *s[] = {"black", "white", "pink", "violet"};
     char **ptr[] = {s+3, s+2, s+1, s}, ***p;
     p = ptr;
     ++p;
     printf("%s", **p+1);
     return 0;
 }