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Welcome to the Input and Output in C MCQs Page

Dive deep into the fascinating world of Input and Output in C with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Input and Output in C, a crucial aspect of C Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Input and Output in C, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within C Programming.

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Check out the MCQs below to embark on an enriching journey through Input and Output in C. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of C Programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Input and Output in C. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Input and Output in C MCQs | Page 3 of 42

Discuss
Answer: (b).%e always formats in the format [-]m.dddddd or [-]m.dddddE[+|-]xx where no.of ds are optional and output formatting depends on the argument.
Q22.
Escape sequences are prefixed with
Discuss
Answer: (d).None of the mentioned
Discuss
Answer: (b).It writes the formatted data into a string
Q24.
The syntax to print a % using printf statement can be done by
Discuss
Answer: (d).%%
Discuss
Answer: (b).Print empty spaces if the string state is less than 10 characters
Discuss
Answer: (b).It keeps the record of the types of arguments that will follow
Q27.
What is the output of this C code?
#include <stdio.h>
    #include <stdarg.h>
    void func(int, ...);
    int main()
    {
        func(2, 3, 5, 7, 11, 13);
        return 0;
    }
    void func(int n, ...)
    {
        int number, i = 0;
        va_list start;
        va_start(start, n);
        while (i != 3)
        {
            number = va_arg(start, int);
            i++;
        }
        printf("%d", number);
    }

a.

3

b.

5

c.

7

d.

11

Discuss
Answer: (c).7
Q28.
Which of the following function with ellipsis are illegal?
Discuss
Answer: (a).void func(…);
Q29.
Which of the following data-types are promoted when used as a parameter for an ellipsis?
Discuss
Answer: (a).char
Q30.
Which header file includes a function for variable number of arguments?
Discuss
Answer: (b).stdarg.h
Page 3 of 42

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