Thursday 7 February 2013

Loop 2

Points  to  remember :
1. for( i =1,x=1;i<=5;x++,i++)
 two variables can be assigned initial values. Both get incremented simultaneously.But the loop will go on till i is less than or equal to 5.
2.  When you have nested loops, the inner loop gets executed completely,then it goes to outer loop.
3. A compund statement is a set of two or more statements.It is also caleed a block.                                          [ICSE 2005]
4. for loop is fixed iterative type, where the loop repeat for a definite number of times. while and do - while varying iterative type , where the statements are repeated till the condition is true.
5.
1. Write a program to display the following :
a)
1
1  2
1  2  3
1  2  3  4
1  2  3  4  5

b)
1
2  2
3  3  3
4  4  4  4
5  5  5  5  5

c)
5  4  3  2  1
5  4  3  2
5  4  3
5  4
5

2. Write a program to input a number and check whether it is a Special number or not. A number is said to be Special number, if the sum of the factorial of each digit of the number is same as the original number.                 [ICSE 2011]
145= 1 ! + 4! + 5!
      =1+24+120
       =145

3. Write a program to input a number and check whether it is a Automorphic number or not. A number is said to Automorphic if the original number is present on the right of the square of the number.
 5 is Automorphic = 25
25 is Automorphic =625

4. A number is said to be Neon , if sum of all the digits of square of a number is equal to the entered number.

9 = square is 81
   = 8 +1
   = 9

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