Answer Posted / balakrishna

void main()
{
int n;int i;int d[100]; char str[100];
clrscr();
printf("\nhow much text u want to print with
spaces...");
scanf("%d",&n);
printf("\nEnter ur message as assuming cellphone
keypad...eg:\npress 2 to print a");
for(i=0;i<n;i++)
{
scanf("%d",&d[i]);

switch(d[i])
{
case 2:
str[i]='a';
break;
case 22:
str[i]='b';
break;
case 222:
str[i]='c';
break;
case 3:
str[i]='d';
break;
case 33:
str[i]='e';
break;
case 333:
str[i]='f';
break;
case 4:
str[i]='g';
break;
case 44:
str[i]='h';
break;
case 444:
str[i]='i';
break;
case 5:
str[i]='j';
break;
case 55:
str[i]='k';
break;
case 555:
str[i]='l';
break;
case 6:
str[i]='m';
break;
case 66:
str[i]='n';
break;
case 666:
str[i]='o';
break;
case 7:
str[i]='p';
break;
case 77:
str[i]='q';
break;
case 777:
str[i]='r';
break;
case 7777:
str[i]='s';
break;
case 8:
str[i]='t';
break;
case 88:
str[i]='u';
break;
case 888:
str[i]='v';
break;
case 9:
str[i]='w';
break;
case 99:
str[i]='x';
break;
case 999:
str[i]='y';
break;
case 9999:
str[i]='z';
break;
case 1:
str[i]=' ';
break;
}

}
printf("\n ur message....%s",str);
getch();
}

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Read N characters in to an array . Use functions to do all problems and pass the address of array to function. 1. Print only the alphabets . If in upper case print in lower case vice versa. 2. Enter alphanumeric characters and form 2 array alphaets and digits.Also print the count of each array. 3. Find the count of a certain character. 4. Print the positions where a certain character occured. 5. Print the characters between successive array elements. 6. Find the largest and smallest charcter. How many times it each one occured. 7. Enter a certain range. Print out the array elements which occured between these range. 8. Reverse a character array without using another array. 9. Reverse an array region. 10. Replace a the array elements with it next character . Use a after z. 11. Code the array element with certain character as first alphabet. 12. Duplicate all the vowels in a character array. What is the new count. 13. Delete the vowels in a character array. What is the new array count. 14. Print the count of all characters in the array. 15. Enter n alphabets and store a upto tht charcter in array.What is the array count? 16. Sort a character array. 17. Merge 2 character arrays largearray,smallarray. 18. Find the pair with largest number of characters in between. 19. Find the numerical value of a charcter array. 20. Store n numeral characters in an arrray. Insert another numeral character in a certain position. 21. Insert a character in a sorted array. 22. Merge 2 sorted arrays in sorted fashion. 23. Duplicate the least occuring character. 24. Write a menu driven program to circular right/left shift an array of n elements. 25. Is the character array palindrome? if not make it palindrome. 26. Concatenate the first n charaters to the end of the string. 27. Print all n group of chracters which are palindrome. 28. Concatneate the reverse of last n characters to the array.

3808

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Write a program to maintain student’s record. Record should not be available to any unauthorized user. There are three (3) categories of users. Each user has its own type. It depends upon user’s type that which kind of operations user can perform. Their types and options are mentioned below: 1. Admin (Search Record [by Reg. No or Name], View All Records, Insert New Record, Modify Existing Record) 2. Super Admin (Search Record [by Reg. No or Name], View All Records, Insert New Record, Modify Existing Record, Delete Single Record) 3. Guest (Search Record [by Reg. No or Name], View All Records) When first time program runs, it asks to create accounts. Each user type has only 1 account (which means that there can be maximum 3 accounts). In account creation, following options are required: Login Name: <6-10 alphabets long, should be unique> Password: <6-10 alphabets long, should not display characters when user type> Confirm Password: Account Type: Login Name, Password and Account Type should be stored in a separate file in encrypted form. (Encryption means that actual information should be changed and Decryption means that Encrypted information is changed back to the actual information) If any of the above mentioned requirement(s) does not meet then point out mistake and ask user to specify information again. When Program is launched with already created accounts, it will ask for user name and password to authenticate. On successful authentication, give options according to the user’s type.

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---