امثلة عن FOR LOOP في ++C

2020-10-10
daafoor

كود c++ يطبع كلمة hello word عشر مرات:

//c++ example to print the word hello 10 times
    for(int i=1;i<=10;i++)
    {
    cout << "Hello world!" << endl;
    }

كود يطبع الاعداد من 1 الى 5 :

for (int i = 0; i < 5; i++) {
  cout << i << "\n";
}

كود طباعة الاعداد الزوجية من 0 الى 10 :

for (int i = 0; i <= 10; i = i + 2) {
  cout << i << "\n";
}

كود طباعة الاعداد الزوجية بين 0 الى 100

<span class="token comment">//c++ example to print all even numbers between 0 to 100</span>
<span class="token keyword">for</span><span class="token punctuation brace-round brace-open brace-level-1" id="pair-6-close">(</span><span class="token keyword">int</span> i<span class="token operator">=</span><span class="token number">0</span><span class="token punctuation">;</span>i<span class="token operator">&lt;=</span><span class="token number">100</span><span class="token punctuation">;</span>i<span class="token operator">++</span><span class="token punctuation brace-round brace-close brace-level-1" id="pair-6-open">)</span>
     <span class="token keyword">if</span><span class="token punctuation brace-round brace-open brace-level-1" id="pair-7-close">(</span>i<span class="token operator">%</span><span class="token number">2</span><span class="token operator">==</span><span class="token number">0</span><span class="token punctuation brace-round brace-close brace-level-1" id="pair-7-open">)</span>
        cout<span class="token operator">&lt;&lt;</span>i<span class="token operator">&lt;&lt;</span>endl<span class="token punctuation">;</span>

<span class="token comment">//another way:</span>
<span class="token keyword">for</span><span class="token punctuation brace-round brace-open brace-level-1" id="pair-8-close">(</span><span class="token keyword">int</span> i<span class="token operator">=</span><span class="token number">0</span><span class="token punctuation">;</span>i<span class="token operator">&lt;=</span><span class="token number">100</span><span class="token punctuation">;</span>i<span class="token operator">+=</span><span class="token number">2</span><span class="token punctuation brace-round brace-close brace-level-1" id="pair-8-open">)</span>
    <span class="token punctuation brace-curly brace-open brace-level-1" id="pair-9-close">{</span>
        cout<span class="token operator">&lt;&lt;</span>i<span class="token operator">&lt;&lt;</span>endl<span class="token punctuation">;</span>
    <span class="token punctuation brace-curly brace-close brace-level-1" id="pair-9-open">}</span>

كود طباعة الاعداد الزوجية من 100 الى 0

<span class="token comment">//write c++ program to print even numbers from 100 to 0</span>
<span class="token keyword">for</span><span class="token punctuation brace-round brace-open brace-level-1" id="pair-10-close">(</span><span class="token keyword">int</span> i<span class="token operator">=</span><span class="token number">100</span><span class="token punctuation">;</span>i<span class="token operator">&gt;=</span><span class="token number">0</span><span class="token punctuation">;</span>i<span class="token operator">-=</span><span class="token number">2</span><span class="token punctuation brace-round brace-close brace-level-1" id="pair-10-open">)</span>
    <span class="token punctuation brace-curly brace-open brace-level-1" id="pair-11-close">{</span>
        cout<span class="token operator">&lt;&lt;</span>i<span class="token operator">&lt;&lt;</span>endl<span class="token punctuation">;</span>
    <span class="token punctuation brace-curly brace-close brace-level-1" id="pair-11-open">}</span>

كود طباعة الاعداد الفردية من 1 الى 10 :

<span class="token keyword">for</span> <span class="token punctuation brace-round brace-open brace-level-1" id="pair-12-close">(</span><span class="token keyword">int</span> i <span class="token operator">=</span> <span class="token number">1</span><span class="token punctuation">;</span> i <span class="token operator">&lt;=</span> <span class="token number">10</span><span class="token punctuation">;</span> i <span class="token operator">=</span> i <span class="token operator">+</span> <span class="token number">1</span><span class="token punctuation brace-round brace-close brace-level-1" id="pair-12-open">)</span> <span class="token punctuation brace-curly brace-open brace-level-1" id="pair-13-close">{</span>
  cout <span class="token operator">&lt;&lt;</span> i <span class="token operator">&lt;&lt;</span> <span class="token string">"\n"</span><span class="token punctuation">;</span>
<span class="token punctuation brace-curly brace-close brace-level-1" id="pair-13-open">}</span>

اكتب برنامج بلغة c++ يقوم بطلب علامات 5 مواد من المستخدم ومن ثم يحسب ويطبع متوسط العلامات:

<span class="token comment">//write c++ program prompts user to enter his marks of 5 subjects, then prints the average mark</span>
    <span class="token keyword">int</span> mark<span class="token operator">=</span><span class="token number">0</span><span class="token punctuation">;</span>
    <span class="token keyword">int</span> totalmarks<span class="token operator">=</span><span class="token number">0</span><span class="token punctuation">;</span>
    <span class="token keyword">for</span><span class="token punctuation brace-round brace-open brace-level-1" id="pair-14-close">(</span><span class="token keyword">int</span> i<span class="token operator">=</span><span class="token number">1</span><span class="token punctuation">;</span>i<span class="token operator">&lt;=</span><span class="token number">5</span><span class="token punctuation">;</span>i<span class="token operator">++</span><span class="token punctuation brace-round brace-close brace-level-1" id="pair-14-open">)</span>
    <span class="token punctuation brace-curly brace-open brace-level-1" id="pair-15-close">{</span>
        cout<span class="token operator">&lt;&lt;</span><span class="token string">"enter mark of subject no."</span><span class="token operator">&lt;&lt;</span>i<span class="token operator">&lt;&lt;</span><span class="token string">": "</span><span class="token punctuation">;</span>
        cin<span class="token operator">&gt;&gt;</span>mark<span class="token punctuation">;</span>
        totalmarks<span class="token operator">=</span>totalmarks<span class="token operator">+</span>mark<span class="token punctuation">;</span>
    <span class="token punctuation brace-curly brace-close brace-level-1" id="pair-15-open">}</span>

    <span class="token keyword">double</span> averageMark<span class="token operator">=</span>totalmarks<span class="token operator">/</span><span class="token number">5</span><span class="token punctuation">;</span>
    cout<span class="token operator">&lt;&lt;</span><span class="token string">"average mark : "</span><span class="token operator">&lt;&lt;</span>averageMark<span class="token punctuation">;</span>