C File Handling Test

1. What is FILE reserved word?

A structure tag declared in stdio.h

Pointer to the structure defined in stdio.h

It is a type name defined in stdio.h

One of the basic data types in c

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

    #include <stdio.h>
    int main()
    {
        FILE *fp = stdout;
        int n;
        fprintf(fp, "%d ", 45);
        fflush(stdout);
        fprintf(stderr, "%d", 65);
        return 0;
    }

45 65

Compilation error

65 45

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

    #include <stdio.h>
    int main()
    {
        FILE *fp = stdout;
        int n;
        fprintf(fp, "%d ", 45);
        fprintf(stderr, "%d ", 65);
        return 0;
    }

65 45

Compilation error

45 65

4. Which of the following fopen() statements are illegal?

fp = fopen("/home/user1/abc.txt", "w");

none of the mentioned

fp = fopen("abc", "w");

fp = fopen("abc.txt", "r");

5. Which of the following statements about stdout and stderr are true?

Both connected to screen always

stdout is line buffered but stderr is unbuffered

Same

Both connected to screen by default

6. What does the following segment of C code do?

fprintf(fp, "Copying!");

It writes as well as reads "Copying!" to and from the file and prints it

It writes "Copying!" into the file pointed by fp

It reads "Copying!" from the file and prints on display

None of the mentioned

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

    #include <stdio.h>
    int main()
    {
        FILE *fp = stdin;
        int n;
        fprintf(fp, "%d", 45);
    }

Depends on the standard

Nothing

Compilation error

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

    #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
        FILE *fp = stdout;
        int n;
        fprintf(fp, "%d", 45);
    }

Depends on the standard

Nothing

Compilation error

9. stdout, stdin and stderr are ________

Structure

Streams

File descriptors

File pointers

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

    #include <stdio.h>
    int main()
    {
        FILE *fp = stdout;
        int n;
        fprintf(fp, "%d\n ", 45);
        fprintf(stderr, "%d ", 65);
        return 0;
    }

Compilation error

65 45

45 65