logo

CuriousTab

CuriousTab

Discussion


Home C Programming Declarations and Initializations See What Others Are Saying!
  • Question
  • In the following program how long will the for loop get executed?
    #include<stdio.h>
    int main()
    {
        int i=5;
        for(;scanf("%s", &i); printf("%d\n", i));
        return 0;
    }
    


  • Options
  • A. The for loop would not get executed at all
  • B. The for loop would get executed only once
  • C. The for loop would get executed 5 times
  • D. The for loop would get executed infinite times

  • Correct Answer
  • The for loop would get executed infinite times 

    Explanation
    During the for loop execution scanf() ask input and then printf() prints that given input. This process will be continued repeatedly because, scanf() returns the number of input given, the condition is always true(user gives a input means it reurns '1').

    Hence this for loop would get executed infinite times.


    More questions

    • 1. Assuming, integer is 2 byte, What will be the output of the program?
      #include;
      
      int main()
      {
          printf("%x\n", -1>>1);
          return 0;
      }
      

    • Options
    • A. ffff
    • B. 0fff
    • C. 0000
    • D. fff0
    • Discuss
    • 2. What is the output of the program given below?
      #include<stdio.h>
      int main()
      {
          enum status { pass, fail, atkt};
          enum status stud1, stud2, stud3;
          stud1 = pass;
          stud2 = atkt;
          stud3 = fail;
          printf("%d, %d, %d\n", stud1, stud2, stud3);
          return 0;
      }
      

    • Options
    • A. 0, 1, 2
    • B. 1, 2, 3
    • C. 0, 2, 1
    • D. 1, 3, 2
    • Discuss
    • 3. What will be the output of the program?
      #include<stdio.h>
      int main()
      {
          char ch;
          ch = 'A';
          printf("The letter is");
          printf("%c", ch >= 'A' && ch <= 'Z'? ch + 'a' - 'A':ch);
          printf("Now the letter is");
          printf("%c\n", ch >= 'A' && ch <= 'Z'? ch : ch + 'a' - 'A');
          return 0;
      }
      

    • Options
    • A. The letter is a
      Now the letter is A
    • B. The letter is A
      Now the letter is a
    • C. Error
    • D. None of above
    • Discuss
    • 4. What will be the output of the program?
      #include<stdio.h>
      int main()
      {
          int k, num=30;
          k = (num>5? (num <=10? 100 : 200): 500);
          printf("%d\n", num);
          return 0;
      }
      

    • Options
    • A. 200
    • B. 30
    • C. 100
    • D. 500
    • Discuss
    • 5. If a function contains two return statements successively, the compiler will generate warnings. Yes/No?

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 6. What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          char *str;
          str = "%s";
          printf(str, "K\n");
          return 0;
      }
      

    • Options
    • A. Error
    • B. No output
    • C. K
    • D. %s
    • Discuss
    • 7. What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          char str1[] = "India";
          char str2[] = "CURIOUSTAB";
          char *s1 = str1, *s2=str2;
          while(*s1++ = *s2++)
              printf("%s", str1);
      
          printf("\n");
          return 0;
      }
      

    • Options
    • A. CuriousTab
    • B. BndiaBIdiaCURIOUSTABia
    • C. India
    • D. (null)
    • Discuss
    • 8. What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          int x=30, *y, *z;
          y=&x; /* Assume address of x is 500 and integer is 4 byte size */
          z=y;
          *y++=*z++;
          x++;
          printf("x=%d, y=%d, z=%d\n", x, y, z);
          return 0;
      }
      

    • Options
    • A. x=31, y=502, z=502
    • B. x=31, y=500, z=500
    • C. x=31, y=498, z=498
    • D. x=31, y=504, z=504
    • Discuss
    • 9. What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          char *p;
          p="hello";
          printf("%s\n", *&*&p);
          return 0;
      }
      

    • Options
    • A. llo
    • B. hello
    • C. ello
    • D. h
    • Discuss
    • 10. What will be the output of the program?
      #include<stdio.h>
      
      int main()
      {
          int i=3, *j, k;
          j = &i;
          printf("%d\n", i**j*i+*j);
          return 0;
      }
      

    • Options
    • A. 30
    • B. 27
    • C. 9
    • D. 3
    • Discuss


    Comments

    There are no comments.

Enter a new Comment