C Programming Questions and Answers – Table Lookup – 1

This set of C Multiple Choice Questions & Answers (MCQs) focuses on “Table Lookup – 1”.

Pre-requisite for this C MCQ set: Advanced C Programming Video Tutorial.

1. What will be 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]);
```
```
    }
```

a) h
b) i
c) e
d) y
View Answer

Answer: b
Explanation: None.

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2. What will be the output of the following C code?

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```
    #include <stdio.h>
```
```
    void main()
```
```
    {
```
```
        char *a[3] = {"hello", "this"};
```
```
        printf("%s", a[1]);
```
```
    }
```

a) hello
b) Varies
c) this
d) Compile time error
View Answer

Answer: c
Explanation: None.

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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]);
```
```
    }
```

a) 2
b) 4
c) Compile time error
d) 3
View Answer

Answer: d
Explanation: None.

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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]);
```
```
    }
```

a) her
b) hi
c) Compile time error
d) hi’s
View Answer

Answer: a
Explanation: None.

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;
```
```
    }
```

a) Compile time error
b) Segmentation fault/code crash
c) xyz
d) Undefined behaviour
View Answer

Answer: a
Explanation: None.

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;
```
```
    }
```

a) Compile time error
b) Segmentation fault
c) Undefined behaviour
d) xyz
View Answer

Answer: d
Explanation: None.

7. 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, 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;
```
```
    }
```

a) Compile time error
b) Segmentation fault/code crash
c) Depends on the compiler
d) xyz
View Answer

Answer: b
Explanation: None.

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;
```
```
    }
```

a) Compile time error
b) Depends on the compiler
c) Undefined behaviour
d) xyz
View Answer

Answer: c
Explanation: None.

Sanfoundry Global Education & Learning Series – C Programming Language.

To practice all areas of C language, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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