Okay, this is the most simplified format of the program I've made thus far.
/* Prob 11-9
* Created by Yuriy Mokriy
*/
#include <stdio.h>
#include <stdlib.h>
#define ALPHABET_TOTAL 25 /* The total number of letters in the alphabet */
main()
{
int text[ALPHABET_TOTAL] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
alpha_count, /* Counts the letters in the alphabet */
char_count = 0, /* Counts the instances of each letter */
letter_count = 0; /* Counts the letters in the text input */
char text_input; /* The text inputted by the user */
/* Text input */
printf("\nPlease enter text. Terminate program by pressing Ctrl+Z: ");
text_input = getchar();
/* Increment counter if not End Of File */
while (text_input = getchar() != EOF)
++letter_count;
/* Display the results */
for (alpha_count = 65; alpha_count <= 90; alpha_count++)
{
if (getchar() == text[alpha_count] || getchar() == text[alpha_count + 32])
char_count++;
printf("\nTotal %c or %c: %d", alpha_count, alpha_count + 32, char_count);
}
}
I haven't used getche() because my textbook doesn't cover that and I haven't seen anything good come out of that when I tried it in my program. I declared a couple of variables called "alpha_count" to count all the letters in the alphabet and "char_count" to increment the letter instances in my block of text.
Now here's the kicker. Upon reading the question more thoroughly, the author's definition of the "end-of-file" character
is the usage of Ctrl+Z to break out of the loop and display the results. That solves one problem.
However, the program is not counting the letter instances.
Here's the original question if you want to know what the author is getting at:
Write a program that prompts the user to enter text at the terminal. When the user finishes entering text, he or she should enter the appropriate end-of-file character to terminate input. The program should count the frequency of each letter of the alphabet. The program should not distinguish an uppercase letter from a lowercase letter. When the user finishes inputting text, the program should display each letter and its output.Here's the hint given by the author:
Declare an array of counters, one for each letter. Use the letter itself as the subscript that determines which array element to increment. To do this, the program must convert the letter to the corresponding subscript. Remember that the decimal ASCII values of the lowercase letters are 97 to 122 and the uppercase letters are 65 to 90.So basically, the only problem left with the program is to count the letter instances of the text. Everything else works fine.
