if...else if...else 判斷式

tonyh

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {   
   
6.     int score; //變數名稱與要做的事有一定程度的相關
   
7.     re:
   
8.     cout<<"請輸入你的成績: ";
   
9.     cin>>score;
   
10.     if(score==100) //在判斷兩邊的值是否相等,要用雙等號
    
11.         cout<<"哇!滿分!"<<endl;
    
12.     else if(score<100 && score>=60)
    
13.         cout<<"恭喜你及格了,給你糖吃!"<<endl;
    
14.     else if(score<60 && score>0)
    
15.         cout<<"不及格!打屁股!"<<endl;
    
16.     else if(score==0)
    
17.         cout<<"零分?斬!"<<endl;
    
18.     else
    
19.         cout<<"輸入錯誤!斬!"<<endl;
    
20.     goto re;
    
21.     system("pause");
    
22.     return 0;   
    
23. }

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古昇暘

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.     int score;
   
7.     re:
   
8.     cout<<"plese enter your score: ";
   
9.     cin>>score;
   
10.     if(score==100)
    
11.         cout<<"awesome marks! I wish you were my homework buddy"<<endl;
    
12.     else if(score<100 && score>60)
    
13.         cout<<"nice work there buddy!"<<endl;
    
14.     else if(score<60 && score>0)
    
15.         cout<<"Maybe next time!"<<endl;
    
16.     else
    
17.         cout<<"Dont be a liar!"<<endl;
    
18.     system("pause");
    
19.     goto re;
    
20.     return 0;   
    
21. }

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古蕾娜

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {   
   
6.     int score;
   
7.     cout<<"please enter your scores: ";
   
8.     cin>>score;
   
9.     if (score==100)
   
10.     cout<<"wow good job!"<<endl;
    
11.     else if(score<100 && score>=60)
    
12.     cout<<" congratulations you have passed:))"<<endl;
    
13.      else if(score<60 && score>0)
    
14.         cout<<"you have not passed:("<<endl;
    
15.     else if(score==0)
    
16.         cout<<"0, very bad!"<<endl;
    
17.     else
    
18.         cout<<"you have entered incorrect marks"<<endl;
    
19.     system("pause");
    
20.     return 0;   
    
21. }

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