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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 8 of 42

Q71.
What is the output of this C code?
#include <stdio.h>
    #include <stdlib.h>
    int main()
    {
        FILE *fp = stdout;
        int n;
        fprintf(fp, "%d", 45);
    }
Discuss
Answer: (b).45
Q72.
stdout, stdin and stderr are
Discuss
Answer: (a).File pointers
Discuss
Answer: (c).Both connected to screen by default
Q74.
What is the output of this C code?
#include <stdio.h>
    int main()
    {
        FILE *fp = stdout;
        int n;
        fprintf(fp, "%d ", 45);
        fprintf(stderr, "%d ", 65);
        return 0;
    }
Discuss
Answer: (b).65 45
Q75.
What is the output of this C code?
#include <stdio.h>
    int main()
    {
        FILE *fp = stdout;
        int n;
        fprintf(fp, "%d\n ", 45);
        fprintf(stderr, "%d ", 65);
        return 0;
    }
Discuss
Answer: (a).45 65
Q76.
What is the output of this C code?
#include <stdio.h>
    int main()
    {
        FILE *fp = stdout;
        int n;
        fprintf(fp, "%d ", 45);
        fflush(stdout);
        fprintf(stderr, "%d", 65);
        return 0;
    }
Discuss
Answer: (a).45 65
Q77.
What is the output of this C code if there is no error in stream fp?
#include <stdio.h>
    int main()
    {
        FILE *fp;
        fp = fopen("newfile", "w");
        printf("%d\n", ferror(fp));
        return 0;
    }
Discuss
Answer: (b).0
Q78.
Within main, return expr statement is equivalent to
Discuss
Answer: (b).exit(expr)
Q79.
What is the output of this C code?
#include <stdio.h>
    int main()
    {
        FILE *fp;
        char c;
        int n = 0;
        fp = fopen("newfile1.txt", "r");
        while (!feof(fp))
        {
            c = getc(fp);
            putc(c, stdout);
        }
    }
Discuss
Answer: (d).None of the mentioned
Q80.
What is the output of this C code?
#include <stdio.h>
    int main()
    {
        FILE *fp = stdout;
        stderr = fp;
        fprintf(stderr, "%s", "hello");
    }
Discuss
Answer: (b).hello

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