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• Write an efficient C code for tr program. tr has two command line arguments. They both are strings of same length. tr reads an input file, replaces each character in the first string with the corresponding character in the second string. eg. tr abc xyz replaces all a by x, b by y and so on.  10.11.08

  A: a) have an array of length 26. put x in array element corr to a put y in array element corr to b put z in array element corr to c put d in array element corr...

• Write an efficient C code for ‘tr’ program. ‘tr’ has two command line arguments. They both are strings of same length. tr reads an input file, replaces each character in the first string with the corresponding character in the second string. eg. ‘tr abc xyz’ replaces all ‘a’s by ‘x’s, ‘b’s by ‘y’s and so on. ANS.  01.11.08

  a) have an array of length 26. put ‘x’ in array element corr to ‘a’ put ‘y’ in array element corr to ‘b’ put ‘z’ in array element corr to...

• What does javascript null mean?  07.10.08

  The null value is a unique value representing no value or no object. It implies no object,or null string,no valid boolean value,no number and no array object....

• What are the pre-requisites to modify datatype of a column and to add a column with NOT NULL constraint?  17.05.08

  - To modify the datatype of a column the column must be empty. - To add a column with NOT NULL constrain, the table must be empty....

• If I do not provide any arguments on the command line, then the String array of Main method will be empty of null ?  27.04.08

  It is empty. But not null....

• How can one prove that the array is not null but empty?  31.07.07

  Print args.length. It will print 0. That means it is empty. But if it would have been null then it would have thrown a NullPointerException on attempting to pri...

• What is the first argument of the String array in main method?  31.07.07

  The String array is empty. It does not have any element. This is unlike C/C++ where the first element by default is the program name....

• What will be the default values of all the elements of an array defined as an instance variable?  16.01.07

  If the array is an array of primitive types, then all the elements of the array will be initialized to the default value corresponding to that primitive type. e...

• What does javascript null mean?  06.07.06

  The null value is a unique value representing no value or no object. It implies no object,or null string,no valid boolean value,no number and no array object....

• What’s the difference between a null pointer, a NULL macro, the ASCII NUL character and a null string?  12.03.06

  A null pointer is a pointer which doesn't point anywhere. A NULL macro is used to represent the null pointer in source code. It has a value 0 associated with it...