L.D.P Assignment L-7

Q.1 state whether the following statement are true or false.

     (a) The type of all elements in an array must be the same.

         Ans:-true

      (b) When an array is declared, C automatically initializes its elements to zero.

         Ans:-false

      (c) An expression that evaluates to an integral value may be used as a subscript.

         Ans:-true

      (d) Accessing an array outside its range is a compile time error.

        Ans:-true

      (e) A char type variable cannot be used as a subscript in an array.

       Ans:-false

      (f) An unsigned long int type can be used as a subscript in an array.

        Ans:-true

      (g) In C, by default, the first subscript is zero.

         Ans:-true

  (h) When initializing a multidimensional array, not specifying  all its dimensions is an error.

        Ans:-false

(i)When we use  expressions as a subscript, its result should be always greater than zero.

       Ans:-false

(j) In C, we can use a maximum of 4 dimensions  for an array.

      Ans:-false

(k)In declaring an array, the array size can be a constant or variable or an expression.

     Ans:-true

(l)The declaration int x[2]={1,2,3}; is illegal.

      Ans:-true

Q.2 Fill in the blanks in the following statements.

(a)The variable used as a subscript in an array is popularly known as  -----------  variable.

    Ans:-index

(b)An array can be initialized either at compile time or at --------.

   Ans:-run time

(c) An array created using malloc function at run time is referred to as ----------array.

     Ans:-dynamic

(d) An array that uses more than two subscript is referred to as      

        ---------array.

         Ans:-multidimensional

  (e) -------- is the process of arranging the elements of an array in order.

     Ans:-sorting   

Q.3 Identify errors, if any, in each of the following array declaration statements, assuming that ROW and COLUMN are declared symbolic constants:

(a) Int score (100);

   error: declaration syntax error  

   Ans:-[100];      

(b) Float values [10, 15];

    Ans:-float value[10][15];

(c) float average[row],[column];

    Ans:-float average[row][column];

(d) char name[15];

   Ans:-true

(e)  Int sum [];

   Ans:-value is not defined

(f)  Double salary [i + row]

     Ans:-semicolon

         Double salary [i+row];

(g)  Long int number [row]

    Ans:-long int number [row];

(h)  Int array x [column];

    Ans:-int x [column];

Q.4 Identify errors, if any, in each of the following initialization statements.

(a) Int number [] = {0,0,0,0,0};

   Ans:-true

(b) float item[3][2]={0,1,2,3,4,5};

    Ans:-true

(c) Char word [] = {‘A’,’R’,’R’,’A’,’Y’};

     Ans:-true

(d) int m[2,4]={(0,0,0,0)(1,1,1,1)};

      Ans:-int m[2][4]={(0,0,0,0)(1,1,1,1)};

(e) Float result [10] =0;

    Ans:-true

Q.5 Assume that the array A and B are declared as follows:

Int A [5] [4];

Float B [4];

Find the error (if any) in the following program segments.

(a)             for (i=1; i<=5; i++)

for (j=1; j<=4;j++)

A[i][j] = 0;

            Ans:-logic error

(b)             for (i=1; i<=4; i++)

                 Scanf (“%f”,B[i]);

            Ans:-not generate error of compile time but get three value

(c)               for (i=0; i<=4; i++)

             B[i]=B[i]+i;

       Ans:-compile time  no error but logical error

(d)            for (i=4; i<=0; i--)

for (j=0;j<4;j++)

A[i] [j]=B[j]+1.0;

           Ans:- compile time not generate error but logical value

Q.6 We want to declare a two-dimensional integer type array called matrix for 3 rows and 5 columns. Which of the following declarations are correct?

  

(a) Int maxtrix [3] , [5];

  Ans:-correct

(b) Int matrix [5] [3];

 Ans:- wrong  

(c) Int matrix [2+1] [2+3];

  Ans:-correct

(d) Int matrix [3,5];

   Ans:-wrong

(e) Int matrix [3] [5];

  Ans:-correct

Q.7 which of the following initialization statements are correct?

 (a) char str1 [4] = “GOOD”;

    Ans:-correct

 (b) char str2 [ ] = “C”;

    Ans:-wrong

 (c) char str3 [5] =”Moon”;

    Ans:-correct

 (d) char str4 [ ] = {‘S’,’U’,’N’};

     Ans:-correct

 (e)char str5 [10] = “SUN”;

Ans:-correct

Q.8 what is the error in the following program?

main( )

     {

         int x;

float y [ ] ;

…….

}

 *Error:-size of ‘y’ is unknown or zero

Q.9 what is the output of the following program?

  main()

    {

        int m [] = {1,2,3,4,5};

        int x, y=0;

        for(x=0;x<5;x++)

           y = y+m[x];

      printf(“%d”,y);

}

OUTPUT:- 15

           

Q.10 what is the output of the following program?

   main()

     {

        chart string [] =”HELLO WORLD”;

        int m;

        for(m=0;string [m] !=’\0’;m++)

          if((m%2) = = 0)

        printf(“%c”,string[m]);

}                    

OUTPUT:-HLOWRD