#include <stdio.h>
#include <string.h>
#include <ctype.h>
#define MAX_WORDS 128
#define MAX_LEN 32
// Function to strip punctuation from both ends of a word
void strip_punctuation(char* word) {
int start = 0;
int end = strlen(word) - 1;
// Trim leading punctuation
while (start <= end && ispunct((unsigned char)word[start])) {
start++;
}
// Trim trailing punctuation
while (end >= start && ispunct((unsigned char)word[end])) {
end--;
}
// Shift the cleaned word to the beginning of the buffer
int i, j = 0;
for (i = start; i <= end; i++) {
word[j++] = word[i];
}
word[j] = '\0';
}
// Function to check if a word is alphabetic
int is_alpha_word(const char* word) {
if (strlen(word) == 0) return 0;
for (int i = 0; word[i]; i++) {
if (!isalpha((unsigned char)word[i])) return 0;
}
return 1;
}
int main() {
const char* s = "python! ,,c, c++. c# $$$java@# php.";
char buffer[256];
strncpy(buffer, s, sizeof(buffer));
buffer[sizeof(buffer) - 1] = '\0';
int count = 0;
char* token = strtok(buffer, " ");
while (token != NULL) {
strip_punctuation(token);
if (is_alpha_word(token)) {
count++;
}
token = strtok(NULL, " ");
}
printf("%d\n", count);
return 0;
}
/*
run:
6
*/
