Write the programs for the following C Language Program

Write the programs for the following.
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1. Accept numbers from the keyboard till the user presses 'N' or 'n'.
   From these accepted numbers display the sum of minimum and maximum.    

2. Accept two alphabetic characters, and write a program to display
   all alphabets lying within the range.
           e.g. if characters entered are 'd' and 'j',
 your program must display e, f, g, h, i

3.  Write a program to display a multiplication table of a given number
    with in a given range.
    The program should accept the range, and the number.
   e.g.   if the range given is from 2 to 6 and the number is 4,
      then display the table as;

4 x  2 = 8            
4 x  3 = 12
4 x  4 = 16
4 x  5 = 20
4 x  6 = 24


4.   Write a program to display the first N multiples of an integer Num.
     Both N and Num must be accepted from the keyboard.
            e.g. if  N=3 and Num=5,
                    then display 3, 6, 9, 12, 15


5. Enter a number (for the number of output lines or rows to display),
     and print as follows.
e.g. If Number entered is 4, then display
1
2 3
3 4 5
4 5 6 7

6. From a set of N positive numbers, find out the lowest number entered.
   Note that if a negative number is entered, it should be considered
   as an invalid entry, and should be rejected by the program.

7. Accept 10 positive even numbers using a loop and display their average.