Trouble with while loop

Hey I am new to programming altogether and have been following tutorials and writing basic programs etc. I am currently trying to make a program that takes an inputted text and gives the frequency of individual letters. However, my program seems to get stuck in the initial while loop and I it seems that no number of changes can get it to get out of the loop. Here is the code:

Code:

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#include <stdio.h>
#include <ctype.h>

int main(int argc, char *argv[]) {
    int letters[26] = {0};
    int count = 0;
    int unused_count = 0;
    int i = 0;

    printf("Enter text you wish to see letter frequency for:\n");
    int current_letter = getchar();

    while(current_letter != EOF) {
        if(isalpha(current_letter)) {
            count++;
            letters[tolower(current_letter) - 'a']++;}
        else {
            unused_count++;}
        current_letter = getchar(); }

    printf("Frequencies:\n");
    while (i < 26) {
        printf("[%c] = %d = %lf%%\n", 'a' + i, letters[i], ((double)letters[i] / count));
        i++;
    }
    printf("Unused characters: %d", unused_count);

    getchar();
    return 0;

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If someone could point me in the right direction I would be very thankful.

Are you getting wrong number of unused characters?

Unless the user presses something (CTRL + D) on Linux to send EOF explicitly, the program will wait for more input. That's it. Maybe add "|| current_char != '\n" or press the key sequence when you're finished.

Quote:

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Originally Posted by Brafil

Unless the user presses something (CTRL + D) on Linux to send EOF explicitly, the program will wait for more input. That's it. Maybe add "|| current_char != '\n" or press the key sequence when you're finished.

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I agree with the above; the code worked for me on Windows after adding missing final "}"
Note: On windows Control-Z is EOF if I recall right. It worked for me.

Tim S

thanks for the responses.... i was using ctrl + D in windows when i needed to be using ctrl + z..... thanks for the help!