//p30.c  -- @CopyLeft by tsaiwn@cs.nctu.edu.tw
//demo usage of char array ; using it as a string
//請執行後看出"阿扁"的內碼
// Most computers adopt ASCII code + Big5 code
// 香港中文碼用 HZ (漢字);  大陸中文碼用 GB (國標)
// IBM 大電腦用 EBCDIC instead of ASCII code
#include <stdio.h>
char haha[ ]={65, 66, 67, 164, 106, 165, 106, 165,107,0};
char gg[ ]="Hello李登輝heeheehee";
char*yy = "Hey 阿扁 How are you?\n";  // 注意這有 \n 換列 
void print(unsigned char*); // 宣告 declare 說會有這函數
int main( ) {
   printf("haha=%s\n", haha);
   printf("gg is ");
   print(gg);  // pass gg to print( )
   printf("gg = %s\n", gg);
   printf("yy is ");
   print(yy);  // pass yy to print( )
   printf("yy = %s\nHit ENTER key..", yy);
   getchar( ); return 0;
}
/****** Running script ..
D:\testc>gcc p35.c

D:\testc>a
haha=ABC大古右
gg is 72 101 108 108 111    167 245 181 110 189
      247 104 101 101 104    101 101 104 101 101
      0
gg = Hello李登輝heeheehee
yy is 72 101 121 32 170    252 171 243 32 72
      111 119 32 97 114    101 32 121 111 117
      63 10 0
yy = Hey 阿扁 How are you?

Hit ENTER key..

D:\testc>
***********************/
void print(unsigned char x[999]) {
   // Note that though parameter x[ ] is an array
   // actually 傳過來的是 pointer (指標) !
   // 指標和 array (陣列) 用起來是互通的!!
   // 寫 x[999] 的 999 也是自欺欺人, 因無法知道 array 多大
   // 實際上傳入此 function 的只是 array 第0個元素的 address
   int i=0; 
   for( ; ; ) {   // while(38==38) {
      printf("%d ", x[i]);
      if(x[i] == 0) break;   // string is NULL-terminated
      ++i;  if(i%5==0)printf("   "); 
      if(i%10==0)printf("\n      "); // 10 data/line
   } // for
   printf("\n");  // new line
}// print(
///////////// END of the program
/******** Running Script
D:\test>
D:\test> path C:\Dev-Cpp\bin;C:\TC\BIN;%path%
D:\test> gcc p30.c

D:\test> a.exe
haha=ABC大古右
gg is 72 101 108 108 111    167 245 181 110 189
      247 104 101 101 104    101 101 104 101 101
      0
gg = Hello李登輝heeheehee
yy is 72 101 121 32 170    252 171 243 32 72
      111 119 32 97 114    101 32 121 111 117
      63 10 0
yy = Hey 阿扁 How are you?

Hit ENTER key..

D:\test>
***********************************/