c/c++补完计划(二-改): c字符串复制

void strCopy(char *dest, const char *str, int len) {
    if (str == nullptr) {
        return;
    }

    int strLen = strlen(str);
    int minLen = min(strLen, len - 1);

    dest[minLen] = '\0';
    for (int i = 0; i < minLen; ++i) {
        dest[i] = str[i];
    }
}

int main() {
    char *str = "hello, world";
    int len = strlen(str);
    char *ret = (char *) malloc(sizeof(char) * (len + 1));
    memset(ret, 0, sizeof(char) * (len + 1));

    strCopy(ret, str, len + 1);
    cout << ret << endl;
    return 0;
}