Table Lookup Quiz Online Practice Test

1. What is the output of the following C code?
#include <stdio.h>
struct student
{
char a[5];
};
void main()
{
struct student s[] = {"hi", "hey"};
printf("%c", s[0].a[1]);
}

2. What will be the output of the following C code?
#include <stdio.h>
void main()
{
char *a[3] = {"hello", "this"};
printf("%s", a[1]);
}

3. What will be the output of the following C code?
#include <stdio.h>
void main()
{
int lookup[100] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
printf("%d", lookup[3]);
}

4. What will be the output of the following C code?
#include <stdio.h>
void main()
{
char *a[3][3] = {{"hey", "hi", "hello"}, {"his", "her", "hell"},
{"hellos", "hi's", "hmm"}};
printf("%s", a[1][1]);
}

5. What will be the output of the following C code?
#include <stdio.h>
struct p
{
char *name;
struct p *next;
};
struct p *ptrary[10];
int main()
{
struct p p;
p->name = "xyz";
p->next = NULL;
ptrary[0] = &p;
printf("%s\n", p->name);
return 0;
}

6. What will be the output of the following C code?
#include <stdio.h>
struct p
{
char *name;
struct p *next;
};
struct p *ptrary[10];
int main()
{
struct p p;
p.name = "xyz";
p.next = NULL;
ptrary[0] = &p;
printf("%s\n", ptrary[0]->name);
return 0;
}

7. What will be the output of the following C code?
#include <stdio.h>
#include <string.h> // This line should be added for strcpy
struct p
{
char *name;
struct p *next;
};
struct p *ptrary[10];
int main()
{
struct p p, q;
p.name = "xyz";
p.next = NULL;
ptrary[0] = &p;
strcpy(q.name, p.name);
ptrary[1] = &q;
printf("%s\n", ptrary[1]->name);
return 0;
}

8. What will be the output of the following C code?
#include <stdio.h>
int main()
{
struct p
{
char *name;
struct p *next;
};
struct p p, q;
p.name = "xyz";
p.next = NULL;
ptrary[0] = &p;
strcpy(q.name, p.name);
ptrary[1] = &q;
printf("%s\n", ptrary[1]->name);
return 0;
}

9. Which function is utilized for searching in the table? (For #define IN 1, the name IN and its replacement text 1 are stored in a “table”)

10. Determine the algorithm used for searching in the table.

11. Identify the function responsible for recording the name “s” and the replacement text “t” in a table.

12. Determine which of the following statements is true.

13. What occurs when `install(s, t)` detects that the name being installed already exists in the table?

14. Under what circumstances does the `install` function return NULL?

15. What will be the output of the following C code?
#include <stdio.h>
struct student
{
char a[];
};
void main()
{
struct student s;
printf("%d", sizeof(struct student));
}

16. What will be the output of the following C code?
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main()
{
struct p
{
char *name;
struct p *next;
};
struct p *ptrary[10];
struct p p, q;
p.name = "xyz";
p.next = NULL;
ptrary[0] = &p;
q.name = (char*)malloc(sizeof(char)*3);
strcpy(q.name, p.name);
q.next = &q;
ptrary[1] = &q;
printf("%s\n", ptrary[1]->next->next->name);
}