A rush code using a #include operation

There is a small partner sent a picture similar to the following picture in our embedded exchange group. I suddenly caused a mistake, I attached the source code, Main.c is as follows: #include "stdio.h" #include "string.h" Static char city_name [] [20] = { #include "city.h" } INT main (void) { Printf ("% s", city_name [0]); } City.h is as follows: "Beijing", "Shanghai", "Guangzhou" The place where this code is in the array of code is in the array in the C language, I use a #include's operation, I have been so big for the first time. However, a small partner said that he was not satisfied, he immediately compiled a piece on his computer, and it was not compiled. He also sticked his code. Where is the problem? See here, you can pause for 10 seconds and think about the reason. Later, the classmates found a question. The problem is that #include "city.h" must be alone. Then there is another problem, why do you have to start a line alone? To this end, I took out the "C and pointer" books that fell a layer of gray, and I didn't find a description. Finally, I found a person's answer on Google: # Must be the first non-air character in a row, that is, it can have spaces, but there is no other characters. This question first reported this. Later, the president of the group made questions. He thinks this city.h does not conform to the C rules. Just look at it is like this, the general header file is not written, but in fact, no one specifies how the header should write, as long as the included C file It can be in compliance with grammar rules. The files included in the #include are not necessarily a file that suffix .h, what suffix format can be. It is also advantageous to use the above method to make it easy to update array content, intuitive. Also if you compile with GCC, GCC uses the -e parameter to help you expand macros definitions and header files. Finally, the president said: Graduation to find a job, proficient in C language; two years later, master C language; five years later, understand the C language. I found a resume that I found my work in 2013. He said yes, my first one is written by proficiency C language programming. Full text. Original title: a Coquetless C language operation Article Source: [WeChat public number: FPGA Home] Welcome to add attention! Please indicate the source of the article. Editor in charge: HAQ, read full article, original title: a Coquetless C language operation Article Source: [Micro Signal: Zhuyandz, WeChat public number: Zhilian Development Arduino] Welcome to add attention! Please indicate the source of the article.

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