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CuriousTab

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  • Question
  • What will be the content of 'file.c' after executing the following program?
    #include<stdio.h>
    
    int main()
    {
        FILE *fp1, *fp2;
        fp1=fopen("file.c", "w");
        fp2=fopen("file.c", "w");
        fputc('A', fp1);
        fputc('B', fp2);
        fclose(fp1);
        fclose(fp2);
        return 0;
    }
    


  • Options
  • A. B
  • B. A
    B
  • C. B
    B
  • D. Error in opening file 'file1.c'

  • Correct Answer


  • Explanation
    Here fputc('A', fp1); stores 'A' in the file1.c then fputc('B', fp2); overwrites the contents of the file1.c with value 'B'. Because the fp1 and fp2 opens the file1.c in write mode.

    Hence the file1.c contents is 'B'.


    Input / Output problems


    Search Results


    • 1. What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          char str[7] = "CuriousTab";
          printf("%s\n", str);
          return 0;
      }
      

    • Options
    • A. Error
    • B. CuriousTab
    • C. Cannot predict
    • D. None of above
    • Discuss
    • 2. If the size of pointer is 32 bits What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          char a[] = "Visual C++";
          char *b = "Visual C++";
          printf("%d, %d\n", sizeof(a), sizeof(b));
          printf("%d, %d", sizeof(*a), sizeof(*b));
          return 0;
      }
      

    • Options
    • A. 10, 2
      2, 2
    • B. 10, 4
      1, 2
    • C. 11, 4
      1, 1
    • D. 12, 2
      2, 2
    • Discuss
    • 3. What will be the output of the program in 16-bit platform (Turbo C under DOS)?
      #include<stdio.h>
      
      int main()
      {
          printf("%d, %d, %d", sizeof(3.0f), sizeof('3'), sizeof(3.0));
          return 0;
      }
      

    • Options
    • A. 8, 1, 4
    • B. 4, 2, 8
    • C. 4, 2, 4
    • D. 10, 3, 4
    • Discuss
    • 4. What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          static char mess[6][30] = {"Don't walk in front of me...", 
                                     "I may not follow;", 
                                     "Don't walk behind me...", 
                                     "Just walk beside me...", 
                                     "And be my friend." };
      
          printf("%c, %c\n", *(mess[2]+9), *(*(mess+2)+9));
          return 0;
      }
      

    • Options
    • A. t, t
    • B. k, k
    • C. n, k
    • D. m, f
    • Discuss
    • 5. What will be the output of the program?
      #include<stdio.h>
      void swap(char *, char *);
      
      int main()
      {
          char *pstr[2] = {"Hello", "CuriousTab"};
          swap(pstr[0], pstr[1]);
          printf("%s\n%s", pstr[0], pstr[1]);
          return 0;
      }
      void swap(char *t1, char *t2)
      {
          char *t;
          t=t1;
          t1=t2;
          t2=t;
      }
      

    • Options
    • A. CuriousTab
      Hello
    • B. Address of "Hello" and "CuriousTab"
    • C. Hello
      CuriousTab
    • D. Iello
      HndiaCURIOUSTAB
    • Discuss
    • 6. What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          int k=1;
          printf("%d == 1 is" "%s\n", k, k==1?"TRUE":"FALSE");
          return 0;
      }
      

    • Options
    • A. k == 1 is TRUE
    • B. 1 == 1 is TRUE
    • C. 1 == 1 is FALSE
    • D. K == 1 is FALSE
    • Discuss
    • 7. What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          FILE *ptr;
          char i;
          ptr = fopen("myfile.c", "r");
          while((i=fgetc(ptr))!=NULL)
              printf("%c", i);
          return 0;
      }
      

    • Options
    • A. Print the contents of file "myfile.c"
    • B. Print the contents of file "myfile.c" upto NULL character
    • C. Infinite loop
    • D. Error in program
    • Discuss
    • 8. What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          float a=3.15529;
          printf("%2.1f\n", a);
          return 0;
      }
      

    • Options
    • A. 3.00
    • B. 3.15
    • C. 3.2
    • D. 3
    • Discuss
    • 9. What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          int a=250;
          printf("%1d\n", a);
          return 0;
      }
      

    • Options
    • A. 1250
    • B. 2
    • C. 50
    • D. 250
    • Discuss
    • 10. What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          FILE *fp;
          char ch, str[7];
          fp=fopen("try.c", "r"); /* file 'try.c' contains "This is Nagpur" */
          fseek(fp, 9L, SEEK_CUR);
          fgets(str, 5, fp);
          puts(str);
          return 0;
      }
      

    • Options
    • A. agpur
    • B. gpur
    • C. Nagp
    • D. agpu
    • Discuss


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