Fixed the logical errors and formated the code for better readeability

[Ank-Frost]

File name Error fixed

issue1.c rev str was assigned characters as in *str ="Forward". So ,I revered the order of assignment

issue2.c in for loop variable even was being multiplied by 2 (even*=2)in each iteration instead of
addition(even+=2). Since even was initiated with value =0 multiplication was giving zero every
iteration.

issue3.c in for loop, statement new[i]=z ; is error it should be new[i]=z[i] instead, for proper assignment
elements of array z to string new

issue4.c sorting algo was logically wrong , it involved comparing of the everyithelements from first to last
element which is causing errors , which should be comparing ith element from (i +1)th till last .

issue5.c. break; statements were missing in each case , causing execution of default every time . so i add break for
every case .

issue6.c strcmp() function returns 0 for same string which is causing condition for if statement to become false
so used "not !" to reverse the condition .

issue7.c the operation (a+b) was adding a to b which is a pointer instead the value it points to , (a+*b) is
correct operation

issue8.c we can use strlen() function to get the length of string . Running for loop for length of string -1 loops
avoids newline character

issue9.c statement if(n==2): return 1; was causing to stop recursive function factorial to stop multiplication as
soon as its argument become 2 ,causing the result to be half of correct result .(factorial is product of
natural number from 1 to n)