1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | #include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include "count_words.h"
/* count_words.c
*
* This is included as a simple example of code you could test using miniunit. Use if you
* find it helpful. Feel free to modify any way you like. You will not turn this in.
*
* Two bugs were intentionally planted to make testing this code more interesting:
* ∙ count_words(…) does not count an apostrophe ("'") or hyphen ("-") as part of a word.
* ∙ The helper _is_letter(…) does not treat "a", "A", "z", and "Z" as letters.
*
* More about this code:
* ∙ bool is a type that can be true or false. It requires #include <stdbool.h>.
*/
bool _is_letter(char ch); // helper
int count_words(const char* words) {
int num_words = 0;
bool in_word = false;
for(int i=0; words[i] != '\0'; i++) {
if(! in_word && _is_letter(words[i])) {
num_words++;
in_word = true;
}
else if(in_word && ! _is_letter(words[i])) {
in_word = false;
}
}
return num_words;
}
bool _is_letter(char ch) {
if(ch > 'a' && ch < 'z') {
return true;
}
else if(ch > 'A' && ch < 'Z') {
return true;
}
else {
return false;
}
}
#define COUNT_WORDS_C_VERSION 2
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */
|
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