问题出在对于字符串数组的定义和赋值上。在原代码中，使用了指针数组来存储字符串，但是并没有为每个字符串分配内存空间。因此，在运行时会导致未定义的行为。
以下是修复后的代码：
#include <stdio.h>#include <stdlib.h>#define MAXSIZE 100char* get_english(int n);int main(){int n = 0;printf("请输入一个非负整数：");scanf("%d", &n);char* str = get_english(n);printf("该整数的英文描述为：%s\n", str);free(str); // 释放内存return 0;}char* get_english(int n){char* num1[MAXSIZE] = {" ", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"};char* num2[MAXSIZE] = {"Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen","Seventeen", "Eighteen","Nineteen"};char* num3[MAXSIZE] = {"Ten","Twenty","Thirty","Forty","Fifty","Sixty","Seventy","Eighty","Ninety"};int thousands = n / 1000;int hundreds = (n % 1000) / 100;int tens = (n % 100) / 10;int ones = n % 10;static char str[MAXSIZE] = {0};int index = 0;if (n == 0){return "Zero";}if (thousands != 0){index += sprintf(str, "%s Thousand ", num1[thousands]);}if (hundreds != 0){index += sprintf(str + index, "%s Hundred ", num1[hundreds]);}if (tens == 1){index += sprintf(str + index, "%s ", num2[ones]);}else{if (tens != 0){index += sprintf(str + index, "%s ", num3[tens - 1]);}if (ones != 0){index += sprintf(str + index, "%s ", num1[ones]);}}str[index] = '\0';return strdup(str); // 使用strdup分配并复制字符串，需要在使用后手动释放内存}
修复后的代码使用strdup()函数来为返回的字符串分配内存，并通过free()函数在主函数中释放。此外，在处理十位数和个位数时也做了相应修改。
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