字串處理 (一)

tonyh

我們在宣告字元陣列的時候要注意它的長度，以免位數不夠造成程式錯誤。事實上，每個字串後面都有一個 '\0' 的字元，例如 "tw" 字串，事實上總共用了 3 Bytes，若為中文字，則每個字要佔兩個字元。

例如:
char str[3]="tw";
char str[9]="字串處理"

試分別利用宣告字串與宣告字元陣列的方式, 在銀幕上顯示 "Good morning!" 字樣.

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.     string str1="Good morning!";
   
7.     char str2[14]="Good morning!";
   
8.     cout<<str1<<endl;
   
9.     cout<<str2<<endl;
   
10.     cout<<str1[0]<<endl;
    
11.     cout<<str2[0]<<endl;
    
12.     system("pause");
    
13.     return 0;   
    
14. }

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俞成章

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.     string str1="Good morning!";
   
7.     char str2[14]="Good morning!";
   
8.     cout<<str1<<endl;
   
9.     cout<<str2<<endl;
   
10.     cout<<str1[0]<<endl;
    
11.     cout<<str2[0]<<endl;
    
12.     system("pause");
    
13.     return 0;   
    
14. }

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呂尚霖

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.     string str1="Good morning!";
   
7.     char str2[14]="Good morning!";
   
8.     cout<<str1<<endl;
   
9.     cout<<str2<<endl;
   
10.     cout<<str1[0]<<endl;
    
11.     cout<<str2[0]<<endl;
    
12.     system("pause");
    
13.     return 0;   
    
14. }

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許洧熏

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.         string str="Good mroning";
   
7.         char cha[13]="Good mroning";
   
8.         cout<<str<<endl;
   
9.         cout<<cha<<endl;      
   
10.                  system("pause");
    
11.         return 0;
    
12. }

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朱奕祐

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.     string str1="Good morning!";
   
7.     char str2[14]="Good morning!";
   
8.     cout<<str1<<endl;
   
9.     cout<<str2<<endl;
   
10.     cout<<str1[0]<<endl;
    
11.     cout<<str2[0]<<endl;
    
12.     system("pause");
    
13.     return 0;   
    
14. }

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余柏緯

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.         string str1="Good morning!";
   
7.         char str2[14]="Good moring!";
   
8.         cout<<str1<<endl;
   
9.         cout<<str2<<endl;
   
10.         cout<<str1[0]<<endl;
    
11.         cout<<str2[0]<<endl;
    
12.         system("pause");
    
13.         return 0;
    
14. }

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王宇崴

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.     string str1="Good morning!";
   
7.     char str2[14]="Good morning!";
   
8.     cout<<str1<<endl;
   
9.     cout<<str2<<endl;
   
10.     cout<<str1[0]<<endl;
    
11.     cout<<str2[0]<<endl;
    
12.     system("pause");
    
13.     return 0;   
    
14. }

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黃子倢

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.         string str="good morning";
   
7.         char cha[]="good morning";
   
8.         cout<<str<<endl;
   
9.         cout<<cha<<endl;
   
10.         system("pause");
    
11.         return 0;
    
12. }

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林鼎傑

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.     string str1="Good morning!";
   
7.     char str2[14]="Good morning!";
   
8.     cout<<str1<<endl;
   
9.     cout<<str2<<endl;
   
10.     cout<<str1[0]<<endl;
    
11.     cout<<str2[5]<<endl;
    
12.     system("pause");
    
13.     return 0;   
    
14. }

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王秉鈞

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.         string str="Good mroning";
   
7.         char cha[13]="Good mroning";
   
8.         cout<<str<<endl;
   
9.         cout<<cha<<endl;      
   
10.                  system("pause");
    
11.         return 0;
    
12. }      

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