Goto & Labels - C Programming Questions and Answers

This set of C Multiple Choice Questions & Answers (MCQs) focuses on “Goto & Labels – 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>
```
```
    int main()
```
```
    {
```
```
        printf("%d ", 1);
```
```
        goto l1;
```
```
        printf("%d ", 2);
```
```
        l1:goto l2;
```
```
        printf("%d ", 3);
```
```
        l2:printf("%d ", 4);
```
```
   }
```

a) 1 4
b) Compilation error
c) 1 2 4
d) 1 3 4
View Answer

Answer: a
Explanation: None.

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

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```
    #include <stdio.h>
```
```
    int main()
```
```
    {
```
```
        printf("%d ", 1);
```
```
        l1:l2:
```
```
        printf("%d ", 2);
```
```
        printf("%d\n", 3);
```
```
    }
```

a) Compilation error
b) 1 2 3
c) 1 2
d) 1 3
View Answer

Answer: b
Explanation: None.

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

```
    #include <stdio.h>
```
```
    int main()
```
```
    {
```
```
        printf("%d ", 1);
```
```
        goto l1;
```
```
        printf("%d ", 2);
```
```
    }
```
```
    void foo()
```
```
    {
```
```
        l1 : printf("3 ", 3);
```
```
    }
```

a) 1 2 3
b) 1 3
c) 1 3 2
d) Compilation error
View Answer

Answer: d
Explanation: None.

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

```
    #include <stdio.h>
```
```
    int main()
```
```
    {
```
```
        int i = 0, j = 0;
```
```
        while (i < 2)
```
```
        {
```
```
            l1 : i++;
```
```
            while (j < 3)
```
```
            {
```
```
                printf("Loop\n");
```
```
                goto l1;
```
```
            }
```
```
        }
```
```
    }
```

a) Loop Loop
b) Compilation error
c) Loop Loop Loop Loop
d) Infinite Loop
View Answer

Answer: d
Explanation: None.

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

```
    #include <stdio.h>
```
```
    int main()
```
```
    {
```
```
        int i = 0, j = 0;
```
```
        while (l1: i < 2)
```
```
        {
```
```
            i++;
```
```
            while (j < 3)
```
```
            {
```
```
                printf("loop\n");
```
```
                goto l1;
```
```
            }
```
```
        }
```
```
    }
```

a) loop loop
b) Compilation error
c) loop loop loop loop
d) Infinite loop
View Answer

Answer: b
Explanation: None.

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

```
    #include <stdio.h>
```
```
    int main()
```
```
    {
```
```
        int i = 0, j = 0;
```
```
        l1: while (i < 2)
```
```
        {
```
```
            i++;
```
```
            while (j < 3)
```
```
            {
```
```
                printf("loop\n");
```
```
                goto l1;
```
```
            }
```
```
        }
```
```
    }
```

a) loop loop
b) compilation error
c) oop loop loop loop
d) infinite loop
View Answer

Answer: a
Explanation: None.

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

```
    #include <stdio.h>
```
```
    void main()
```
```
    {
```
```
        int i = 0;
```
```
        if (i == 0)
```
```
        {
```
```
            goto label;
```
```
        }
```
```
        label: printf("Hello");
```
```
    }
```

a) Nothing
b) Error
c) Infinite Hello
d) Hello
View Answer

Answer: d
Explanation: None.

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

```
    #include <stdio.h>
```
```
    void main()
```
```
    {
```
```
        int i = 0, k;
```
```
        if (i == 0)
```
```
            goto label;
```
```
            for (k = 0;k < 3; k++)
```
```
            {
```
```
                printf("hi\n");
```

                label: k = printf("%03d", i);

```
            }
```
```
    }
```

a) 0
b) hi hi hi 0 0 0
c) 0 hi hi hi 0 0 0
d) 0 0 0
View Answer

Answer: a
Explanation: None.

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

```
    #include <stdio.h>
```
```
    void main()
```
```
    {
```
```
        int i = 0, k;
```
```
        label: printf("%d", i);
```
```
        if (i == 0)
```
```
            goto label;
```
```
    }
```

a) 0
b) Infinite 0
c) Nothing
d) Error
View Answer

Answer: b
Explanation: None.

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C Programming Questions and Answers – Goto & Labels – 1

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