{"id":243,"date":"2026-04-23T13:02:05","date_gmt":"2026-04-23T13:02:05","guid":{"rendered":"https:\/\/infmix.ro\/a6a\/?page_id=243"},"modified":"2026-04-23T14:09:20","modified_gmt":"2026-04-23T14:09:20","slug":"m5-l5-instructiunea-repetitiva-cu-contor","status":"publish","type":"page","link":"https:\/\/infmix.ro\/a6a\/modul-5-limbaje-de-programare\/m5-l5-instructiunea-repetitiva-cu-contor\/","title":{"rendered":"M5 L5 Instruc\u021biunea repetitiv\u0103 cu contor"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Defini\u021bie <\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Instruc\u021biunea repetitiv\u0103 cu contor (<code>for<\/code>)<\/strong> este o structur\u0103 de control care repet\u0103 executarea unui bloc de instruc\u021biuni de un num\u0103r cunoscut de ori, folosind o variabil\u0103 numit\u0103 <strong>contor<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Se mai nume\u0219te \u0219i instruc\u021biunea repetitiv\u0103 cu num\u0103r cunoscut de pa\u0219i unde pa\u0219ii sunt num\u0103ra\u021bi de un contor de obicei notat cu litera \u201ei\u201d de la index.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Sintax\u0103 \u00een pseudocod<\/strong>:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">pentru (ini\u021bializare contor; finalizare; pas)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {&nbsp;&nbsp;&nbsp;&nbsp; \u2026\u2026 alte instruc\u021biuni\u2026\u2026&nbsp;&nbsp;&nbsp; }<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Sintax\u0103 \u00een cod (limbajul C)<\/strong>:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">for (i=1; i&lt;=n; i++)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {&nbsp;&nbsp;&nbsp;&nbsp; \u2026\u2026 alte instruc\u021biuni\u2026\u2026&nbsp;&nbsp;&nbsp; }<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Exemplu<\/strong>: <strong>Suma primelor n numere naturale<\/strong> folosind instruc\u021biunea repetitiv\u0103 cu contor (<code>for<\/code>)<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Enun\u021b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Se cite\u0219te un num\u0103r natural <strong>n<\/strong>. S\u0103 se calculeze \u0219i s\u0103 se afi\u0219eze <strong>suma primelor n numere naturale<\/strong>.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;iostream>\nusing namespace std;\n\nint main()\n{\n    int n, i;\n    int suma = 0;\n\n    cout &lt;&lt; \"Introduceti n: \";\n    cin >> n;\n\n    for(i = 1; i &lt;= n; i++)\n    {\n        suma = suma + i;\n    }\n\n    cout &lt;&lt; \"Suma este \" &lt;&lt; suma &lt;&lt; endl;\n\n    return 0;\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Explica\u021bia programului pas cu pas<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><code>int n, i;<\/code><\/strong><br>\u2013 <code>n<\/code> este num\u0103rul citit de la tastatur\u0103<br>\u2013 <code>i<\/code> este <strong>contorul<\/strong> buclei<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><code>int suma = 0;<\/code><\/strong><br>\u2013 ini\u021bializ\u0103m variabila \u00een care vom aduna valorile<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><code>cin &gt;&gt; n;<\/code><\/strong><br>\u2013 citim valoarea lui <strong>n<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><code>for(i = 1; i &lt;= n; i++)<\/code><\/strong><br>\u2013 bucla se repet\u0103 de <strong>n ori<\/strong><br>\u2013 <code>i<\/code> ia pe r\u00e2nd valorile: <code>1, 2, 3, ..., n<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><code>suma = suma + i;<\/code><\/strong><br>\u2013 la fiecare pas adun\u0103m valoarea lui <code>i<\/code> la sum\u0103<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><code>cout &lt;&lt; \"Suma este \" &lt;&lt; suma;<\/code><\/strong><br>\u2013 afi\u0219\u0103m rezultatul final<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Exemplu de execu\u021bie<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dac\u0103 utilizatorul introduce:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">n = 5<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Atunci programul calculeaz\u0103:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">suma = 1 + 2 + 3 + 4 + 5 = 15<\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">Tem\u0103: S\u0103 se modifice programul de mai sus astfel \u00eenc\u00e2t s\u0103 execute \u0219i s\u0103 afi\u0219eze produsul primelor n numere naturale folosind instruc\u021biunea repetitiv\u0103 cu contor.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Defini\u021bie Instruc\u021biunea repetitiv\u0103 cu contor (for) este o structur\u0103 de control care repet\u0103 executarea unui bloc de instruc\u021biuni de un num\u0103r cunoscut de ori, folosind o variabil\u0103 numit\u0103 contor. Se mai nume\u0219te \u0219i instruc\u021biunea repetitiv\u0103 cu num\u0103r cunoscut de pa\u0219i unde pa\u0219ii sunt num\u0103ra\u021bi de un contor de obicei notat cu litera \u201ei\u201d de la [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":160,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_FSMCFIC_featured_image_caption":"","_FSMCFIC_featured_image_nocaption":"","_FSMCFIC_featured_image_hide":"","footnotes":""},"class_list":["post-243","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>M5 L5 Instruc\u021biunea repetitiv\u0103 cu contor - Clasa a VI-a InfMix<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/infmix.ro\/a6a\/modul-5-limbaje-de-programare\/m5-l5-instructiunea-repetitiva-cu-contor\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"M5 L5 Instruc\u021biunea repetitiv\u0103 cu contor - Clasa a VI-a InfMix\" \/>\n<meta property=\"og:description\" content=\"Defini\u021bie Instruc\u021biunea repetitiv\u0103 cu contor (for) este o structur\u0103 de control care repet\u0103 executarea unui bloc de instruc\u021biuni de un num\u0103r cunoscut de ori, folosind o variabil\u0103 numit\u0103 contor. 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