Readability lab: Counting letters

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#include <stdio.h>
#include <cs50.h>
#include <string.h>

int main(void) {
    string enterword = get_string("input: ");
    int t = strlen(enterword);
    printf("%i\n", t);
    int counter = 0;
    for (int i = 0; i <= t; i++) {

        if (enterword == '.' || enterword == '!' || enterword == '?') {
            counter = counter + 1;
        }
    }
    printf("number of lines %i\n", counter);
    int wordcounter = 1;
    for (int i = 0; i <= t; i++) {
        if (enterword == ' ') {
            wordcounter = wordcounter + 1;

        }
    }
    printf("total words %i\n", wordcounter);
}

			

After getting counted the number of words, sentences, it is time to count number of letters. Here is my tentative idea:

lettercounter = 0

Total characters are known by string length function.

lettercounter will be lettercounter = lettercounter + 1 whenever there are alphabets till it reaches string length. Now, one point to clear is how alphabets will be distinguished from digits, punctuation marks. Is my approach correct?

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https://cs50.stackexchange.com/questions/42285/readability-lab-counting-letters[learn_press_profile]

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