Today, I reviewed the basis of C language, so I know the new

Today saw the C video, think programming is not difficult, the key is the idea, the idea of proficiency is only in the understanding of the basis, and constantly skilled, skilled and skilled, the harvest is as follows:

1. The declaration of a function can be written specifically in a header file, and then imported when used

2. If the C language is judged by the if (), the constants should be written in front, so as to prevent the lack of writing parentheses and bring troublesome bugs
   

Today, I reviewed the basis of C language, so I know the new