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  • Question
  • Which files will get closed through the fclose() in the following program?
    #include<stdio.h>
    
    int main()
    {
        FILE *fs, *ft, *fp;
        fp = fopen("A.C", "r");
        fs = fopen("B.C", "r");
        ft = fopen("C.C", "r");
        fclose(fp, fs, ft);
        return 0;
    }
    


  • Options
  • A. "A.C" "B.C" "C.C"
  • B. "B.C" "C.C"
  • C. "A.C"
  • D. Error in fclose()

  • Correct Answer
  • Error in fclose() 

    Explanation
    Extra parameter in call to fclose().

    Input / Output problems


    Search Results


    • 1. In a file contains the line "I am a boy\r\n" then on reading this line into the array str using fgets(). What will str contain?

    • Options
    • A. "I am a boy\r\n\0"
    • B. "I am a boy\r\0"
    • C. "I am a boy\n\0"
    • D. "I am a boy"
    • Discuss
    • 2. To print out a and b given below, which of the following printf() statement will you use?
      #include<stdio.h>
      
      float a=3.14;
      double b=3.14;
      

    • Options
    • A. printf("%f %lf", a, b);
    • B. printf("%Lf %f", a, b);
    • C. printf("%Lf %Lf", a, b);
    • D. printf("%f %Lf", a, b);
    • Discuss
    • 3. Out of fgets() and gets() which function is safe to use?

    • Options
    • A. gets()
    • B. fgets()
    • Discuss
    • 4. To scan a and b given below, which of the following scanf() statement will you use?
      #include<stdio.h>
      
      float a;
      double b;
      

    • Options
    • A. scanf("%f %f", &a, &b);
    • B. scanf("%Lf %Lf", &a, &b);
    • C. scanf("%f %Lf", &a, &b);
    • D. scanf("%f %lf", &a, &b);
    • Discuss
    • 5. Which of the following function is more appropriate for reading in a multi-word string?

    • Options
    • A. printf();
    • B. scanf();
    • C. gets();
    • D. puts();
    • Discuss
    • 6. What is the purpose of "rb" in fopen() function used below in the code?
      FILE *fp;
      fp = fopen("source.txt", "rb");
      

    • Options
    • A. open "source.txt" in binary mode for reading
    • B. open "source.txt" in binary mode for reading and writing
    • C. Create a new file "source.txt" for reading and writing
    • D. None of above
    • Discuss
    • 7. Consider the following program and what will be content of t?
      #include<stdio.h>
      
      int main()
      {
          FILE *fp;
          int t;
          fp = fopen("DUMMY.C", "w");
          t = fileno(fp);
          printf("%d\n", t);
          return 0;
      }
      

    • Options
    • A. size of "DUMMY.C" file
    • B. The handle associated with "DUMMY.C" file
    • C. Garbage value
    • D. Error in fileno()
    • Discuss
    • 8. What does fp point to in the program?
      #include<stdio.h>
      
      int main()
      {
          FILE *fp;
          fp=fopen("trial", "r");
          return 0;
      }
      

    • Options
    • A. The first character in the file
    • B. A structure which contains a char pointer which points to the first character of a file.
    • C. The name of the file.
    • D. The last character in the file.
    • Discuss
    • 9. On executing the below program what will be the contents of 'target.txt' file if the source file contains a line "To err is human"?
      #include<stdio.h>
      
      int main()
      {
          int i, fss;
          char ch, source[20] = "source.txt", target[20]="target.txt", t;
          FILE *fs, *ft;
          fs = fopen(source, "r");
          ft = fopen(target, "w");
          while(1)
          {
              ch=getc(fs);
              if(ch==EOF)
                  break;
              else
              {
                  fseek(fs, 4L, SEEK_CUR);
                  fputc(ch, ft);
              }
          }
          return 0;
      }
      

    • Options
    • A. r n
    • B. Trh
    • C. err
    • D. None of above
    • Discuss
    • 10. Which of the following operations can be performed on the file "NOTES.TXT" using the below code?
      FILE *fp;
      fp = fopen("NOTES.TXT", "r+");
      

    • Options
    • A. Reading
    • B. Writing
    • C. Appending
    • D. Read and Write
    • Discuss


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