C语言实现翻译功能

#include<stdio.h>
#define number 100
struct date
{
 char chinese[30];
 char English[30];
}a[number];
void copy(char *str1, char *str2, int counst)//将值赋给trans
{
 int i = 0;
 if (str2 == ' ' || str2 == '\0')
 {
 return;
 }
 while (counst--)
 {
 *str1++ = *str2++;
 }
 return;
}
int panduan(char *d, char *f)//判断是否相等
{
 char *str1 = d, *str2 = f;
 int xc=0;
 while (!(xc = *str2 - *str1)&&*str1)
 {
 str1++;
 str2++;
 }
 if (xc != 0)
 {
 return 0;
 }
 return 1;
}
char* ry( struct date a[number],char *wordtemp,int x) 
{
 for (int i = 0;i<x; i++)
 {
 if (panduan(a[i].English, wordtemp))
 {
 return a[i].chinese;
 }
 }
 return "NULL";
}
int main()
{
 char b;
 int x;
 int exit=0;
 char str[50];
 printf("[请先输入英文单词，再输入拼音，中间以空格隔开，当输入*时结束]\n");
 for (int i=0;; i++)
 {
 printf("第[%d]组：\t", i+1);
 scanf("%[^' ']", a[i].English);
 scanf("%c", &b);
 scanf("%[^\n]", a[i].chinese);
 scanf("%c", &b);
 if (*a[i].English == '*'&&*a[i].chinese == '*')
 {
 x = i;
 break;
 }
 }
 printf("[请输入你所要翻译的内容]\n");
 scanf("%[^\n]", str);
 printf("|翻译的结果为|:\n");
 for (int i = 0;; i++)
 {
 if (str[i] != ' ')
 {
 char Trans[100];
 int n = 0;
 if(str[i]!=' ')
 { 
 while (!(str[i] == ' ' || str[i] == '\0'))
 {
 n++;
 i++;
 if (str[i] == '\0')
 {
  exit = 1;
 }
 } 
 copy(Trans, &str[i - n], n);
 Trans[n] = '\0';
 printf("[%s]", ry(a,Trans,x));
 }
 if (exit)
 {
 break;
 }
 }
 }
 system("pause");
}