{"id":5070,"date":"2022-04-04T21:12:51","date_gmt":"2022-04-04T12:12:51","guid":{"rendered":"https:\/\/www.skyer9.pe.kr\/wordpress\/?p=5070"},"modified":"2022-04-04T22:05:52","modified_gmt":"2022-04-04T13:05:52","slug":"c-cast-%ec%97%b0%ec%82%b0%ec%9e%90-%ec%9a%b0%ec%84%a0%ec%88%9c%ec%9c%84","status":"publish","type":"post","link":"https:\/\/www.skyer9.pe.kr\/wordpress\/?p=5070","title":{"rendered":"c cast \uc5f0\uc0b0\uc790 \uc6b0\uc120\uc21c\uc704"},"content":{"rendered":"<h1>c cast \uc5f0\uc0b0\uc790 \uc6b0\uc120\uc21c\uc704<\/h1>\n<h2>c cast \uc5f0\uc0b0\uc790 \uc6b0\uc120\uc21c\uc704\ub294 \uacf1\uc148\ubcf4\ub2e4 \ub192\ub2e4.<\/h2>\n<p>\uc544\ub798 \uccab\ubc88\uc9f8 \uacc4\uc0b0\uc5d0\uc11c cast \uc5f0\uc0b0\uc774 \uba3c\uc800 \uc774\ub8e8\uc5b4\uc9c0\ubbc0\ub85c,<br \/>\noverflow \uac00 \ubc1c\uc0dd\ud55c\ub2e4.<\/p>\n<pre><code class=\"language-c\">#include &lt;stdio.h&gt;\n#include &lt;stdint.h&gt;\n\n#define MEGA 1000000\n\nint main() {\n    uint64_t u = 4000;\n    u = u * MEGA;\n    int i = (int) u \/ MEGA;     \/\/ overflow\n    printf(&quot;%d\\n&quot;, i);\n\n    int j = u \/ MEGA;           \/\/ ok\n    printf(&quot;%d\\n&quot;, j);\n\n    int k = (int) (u \/ MEGA);   \/\/ ok\n    printf(&quot;%d\\n&quot;, k);\n}<\/code><\/pre>\n<p>\ucd9c\ub825\uac12\uc774 \uc544\ub798\uc640 \uac19\ub2e4.<\/p>\n<pre><code class=\"language-bash\">-294\n4000\n4000<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>c cast \uc5f0\uc0b0\uc790 \uc6b0\uc120\uc21c\uc704 c cast \uc5f0\uc0b0\uc790 \uc6b0\uc120\uc21c\uc704\ub294 \uacf1\uc148\ubcf4\ub2e4 \ub192\ub2e4. \uc544\ub798 \uccab\ubc88\uc9f8 \uacc4\uc0b0\uc5d0\uc11c cast \uc5f0\uc0b0\uc774 \uba3c\uc800 \uc774\ub8e8\uc5b4\uc9c0\ubbc0\ub85c, overflow \uac00 \ubc1c\uc0dd\ud55c\ub2e4. #include &lt;stdio.h&gt; #include &lt;stdint.h&gt; #define MEGA 1000000 int main() { uint64_t u = 4000; u = u * MEGA; int i = (int) u \/ MEGA; \/\/ overflow printf(&quot;%d\\n&quot;, i); int j = u \/\u2026 <span class=\"read-more\"><a href=\"https:\/\/www.skyer9.pe.kr\/wordpress\/?p=5070\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"class_list":["post-5070","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/5070","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5070"}],"version-history":[{"count":2,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/5070\/revisions"}],"predecessor-version":[{"id":5072,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/5070\/revisions\/5072"}],"wp:attachment":[{"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5070"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5070"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5070"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}