/C06007 - Loại bỏ từ trong xâu

<Problem>

https://code.ptit.edu.vn/student/question/C06007
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <math.h>
int main() {
	char s[201];
	gets(s);

	char sub[201];
	gets(sub);

	char arr[100][100];
	int len = 0;

	const char* delim = " ";

	char* token = strtok(s, delim);

	while (token != NULL) {
		strcpy(arr[len++], token);
		token = strtok(NULL, delim);
	}

	for (int i = 0; i < len; i++) {
		if (strcmp(arr[i], sub) != 0) {
			printf("%s ", arr[i]);
		}
	}

	return 0;
}