Question Answer Tutorial - Linux->Memory

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Question: What is the output of this program?

    #include
    #include
    #include

    int main()
    {
        int ptr;
        ptr = (int)malloc(sizeof(int)*10);
        return 0;
    }

Answer: None of the mentioned options

Question: What is the output of this program?

   #include
   #include
   struct st{
       int a;
       char b;
   };

   int main()
   {
       struct st *st_ptr;
       st_ptr = malloc(sizeof(struct st));
       printf("%d
",sizeof(struct st));
       return 0;
   }

Answer: 8

Question: What is the output of this program?

   #include
   #include

   int main()
   {
       int *ptr;
       ptr = (int *)calloc(1,sizeof(int));
       if (ptr != 0)
           printf("%d
",*ptr);
       return 0;
   }

Answer: 0

Question: What is the output of this program?

   #include
   #include

   int main()
   {
       int *ptr;
       *ptr = 10;
       *ptr = 20;
       printf("%d
",*ptr);
       return 0;
   }

Answer: Segmentation fault

Question: In this program the allocated memory block can store

    #include
    #include

    int main()
    {
        int *ptr;
        ptr = malloc(10);
        return 0;
    }

Answer: All of the mentioned options

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