//palindromeround2

#include <stdio.h>
#include <stdlib.h>
#define MAX_CHARACTER 4096


int caseShifter(int input);

int evenPalindromeTest(char input[]);

int oddPalindromeTest(char input[]);

int filterLengthCounter(char input[]);

int main(void) {

	char inputArray[MAX_CHARACTER] = {0};

	char filteredArray[MAX_CHARACTER] = {0};

	int arrayCounter = 0;
	int filterCounter = 0;

	int shiftedCase;

	int filterLength;

	printf("Enter a string: ");

	inputArray[arrayCounter] = getchar();

	while(arrayCounter < MAX_CHARACTER && inputArray[arrayCounter] != '\n') {

		if('a' <= inputArray[arrayCounter] && inputArray[arrayCounter] <= 'z'){

			filteredArray[filterCounter] = inputArray[arrayCounter];

			filterCounter = filterCounter + 1;
		}

		else if('A' <= inputArray[arrayCounter] && inputArray[arrayCounter] <= 'Z'){

			shiftedCase = caseShifter(inputArray[arrayCounter]);

			filteredArray[filterCounter] = shiftedCase;

			filterCounter = filterCounter + 1;
		}

		arrayCounter = arrayCounter + 1;

		inputArray[arrayCounter] = getchar();


	}

	filterLength = filterLengthCounter(filteredArray);

	printf("%d\n", filterLength);


	return 0;
}

int caseShifter(int input){

	int output;

	output = input + 32;

	return output;
}

int evenPalindromeTest(char input[]){
	int output = 0;
	return output;
}

int oddPalindromeTest(char input[]){
	int output = 0;
	return output;
}

int filterLengthCounter(char input[]){

	int counter = 0;
	int length = 0;

	while (counter != '\n'){

		counter = counter + 1;

	}

	length = counter;

	return length;
}