How to write newline in c language

Line wrapping in C language can realize the function of switching to the next line. There are three main methods: 1. Using the escape character \n; 2. Using the puts function; 3. Directly wrapping the line in some cases. The EOL macro can be used to automatically select line breaks when cross-platform.

Newline in C language

In C language, newline can use the escape character\ n to achieve.

Use printf function

<code class="c">printf("这是第一行\n这是第二行");</code>

Use puts function

<code class="c">puts("这是第一行");
puts("这是第二行");</code>

Direct line wrapping

In some cases, you can also wrap lines directly in the code without using any functions or characters:

<code class="c">这是第一行
这是第二行</code>

Cross-platform considerations

In Windows systems, \n represents a newline character, while in Unix and Linux systems, it represents a newline and carriage return. For cross-platform compatibility, you can use the macro EOL, which will automatically select the correct newline character depending on the system:

<code class="c">#if defined(_WIN32) || defined(_WIN64)
#define EOL "\r\n"
#else
#define EOL "\n"
#endif

printf("这是第一行%s这是第二行", EOL);</code>

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