使用strtok、malloc和realloc从字符串生成标记数组

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

char** generateTokenArray(const char* str, const char* delim, int* tokenCount) {
    char* copyStr = strdup(str);  // 复制原字符串，以免修改原字符串
    char* token = strtok(copyStr, delim);
    char** tokenArray = NULL;
    int count = 0;

    while (token != NULL) {
        count++;
        tokenArray = (char**)realloc(tokenArray, count * sizeof(char*));
        tokenArray[count - 1] = strdup(token);
        token = strtok(NULL, delim);
    }

    *tokenCount = count;
    free(copyStr);
    return tokenArray;
}

int main() {
    const char* str = "Hello,World,How,Are,You";
    const char* delim = ",";

    int tokenCount = 0;
    char** tokens = generateTokenArray(str, delim, &tokenCount);

    printf("Token Count: %d\n", tokenCount);
    for (int i = 0; i < tokenCount; i++) {
        printf("Token %d: %s\n", i + 1, tokens[i]);
        free(tokens[i]);
    }

    free(tokens);
    return 0;
}