Answer Posted / abdur rab

#include <stdio.h>

int reverse_digits ( int number, int* digits )
{
int n_digits = 0;
int rev_number = 0;

while ( number ) {
rev_number *= 10;
rev_number += number % 10;
number /= 10;
n_digits++;
}

*( digits ) = n_digits;
return ( rev_number );
}

int palindrome ( int number, int digits )
{
int flag = 1;

while ( number ) {
if ( ( number % 10 ) != ( number / (int)
pow ( 10, digits - 1 ) ) && ( digits > 1 ) ) {
flag = 0;
break;
}

// removing first and last digits
if ( 1 < ( digits -= 2 ) ) {
number /= 10;
number = number % (int) pow ( 10,
digits );
} else break;
}

return ( flag );
}

int main ( int argc, char* argv [] )
{
int number = 123;
int digits = 0;

int rev_number = 0;

rev_number = reverse_digits ( number, &digits );

if ( !palindrome ( number, digits ) ) {
printf ("\n NOT Palindrome, creating
Palindrome");
/**
* if you need 12321 use digits - 1
* if you need 123321 use digits
*/
number *= (int) pow ( 10, ( digits - 1 ) );
number += rev_number % (int) pow ( 10, (
digits - 1 ) );
}

printf ( "\n The Number: %d", number );

return ( 0 );
}

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.

3861

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The purpose of this exercise is to benchmark file writing and reading speed. This exercise is divided into two parts. a). Write a file character by character such that the total file size becomes approximately >10K. After writing close the file handler, open a new stream and read the file character by character. Record both times. Execute this exercise at least 4 times b). Create a buffer capable of storing 100 characters. Now after generating the characters, first store them in the buffer. Once the buffer is filled up, store all the elements in the file. Repeat the process until the total file size becomes approximately >10K.While reading read a while line, store it in buffer and once buffer gets filled up, display the whole buffer. Repeat the exercise at least 4 times with different size of buffer (50, 100, 150 …). Records the times. c). Do an analysis of the differences in times and submit it in class.

2134

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1172

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1102

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1257

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1093

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1160

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Given only putchar (no sprintf, itoa, etc.) write a routine putlong that prints out an unsigned long in decimal. [ I gave the obvious solution of taking % 10 and / 10, which gives us the decimal value in reverse order. This requires an array since we need to print it out in the correct order. The interviewer wasn't too pleased and asked me to give a solution which didn't need the array ].

1145

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1427

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write a program to print data of 5 five students with structures?

2093

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1152

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1239

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Why does everyone say not to use scanf? What should I use instead?

1476

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1079

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