<p style="color:rgb(85,85,85);font-family:'microsoft yahei';font-size:14px;line-height:35px;">
1.声明头文件,相当于<a class="replace_word" data-token="dfa9f7941d2ea19a98e9fec911402bad" href="http://lib.csdn.net/base/javaee" rel="nofollow" style="text-decoration:none;color:rgb(223,52,52);font-weight:bold;" title="Java EE知识库">Java</a>的导包。</p>
<pre class="blockcode" style="font-family:'Source Code Pro', monospace;font-size:14px;line-height:1.45;color:rgb(51,51,51);border:1px solid rgba(128,128,128,.0745098);"><code class="hljs cpp has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//只有函数的声明,编译时会去找到函数的实现</span>
<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">#include <stdio.h> </span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li></ul></pre>
<p style="color:rgb(85,85,85);font-family:'microsoft yahei';font-size:14px;line-height:35px;">
2.写main()方法</p>
<pre class="blockcode" style="font-family:'Source Code Pro', monospace;font-size:14px;line-height:1.45;color:rgb(51,51,51);border:1px solid rgba(128,128,128,.0745098);"><code class="hljs scss has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"> <span class="hljs-function" style="box-sizing: border-box;">main()</span>{
<span class="hljs-function" style="box-sizing: border-box;">printf(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"hello from c\n"</span>)</span>; <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//\n换行 </span>
}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li></ul></pre>
<p style="color:rgb(85,85,85);font-family:'microsoft yahei';font-size:14px;line-height:35px;">
3.为了观察程序执行的结果,需要调用windows系统的一个指令</p>
<pre class="blockcode" style="font-family:'Source Code Pro', monospace;font-size:14px;line-height:1.45;color:rgb(51,51,51);border:1px solid rgba(128,128,128,.0745098);"><code class="hljs scss has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//等待输入</span>
<span class="hljs-function" style="box-sizing: border-box;">system(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"pause"</span>)</span>; 或者<span class="hljs-function" style="box-sizing: border-box;">getchar()</span>;</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;" |
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