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This article mainly explains "what is the branch and loop of C language". The content of the explanation in this article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought. Let's study and learn "what is the branch and loop of C language"!

What is a sentence

We often put a semicolon at the end of a piece of code. In C language, the semicolon is preceded by a statement, such as

Int a = 0 role / this is a statement printf ("% d\ n", a); this is another statement

It's a simple concept.

So, if you put a semicolon and write nothing before the semicolon, does it count as a statement?

A: yes, of course. This is a small point to pay attention to.

II. Branch statement

The branch sentence is also called choice structure, for example, if you study hard, you can find a good job; if you play games all day, it means you choose to lose your job after graduation. Whether to study hard or play games, this is your choice, your choice will bring the corresponding results, this is the branch sentence.

Branch statement:

If

Switch

1.if statement

The structure of the if statement:

If (conditional) statement (result); else statement (result)

If the conditions in if parentheses are met, the statement under if is executed, otherwise the statement under else is executed.

There is a structure above, and another is called a multi-branch structure:

If (condition) (statement); else if (condition) (statement); else (condition) (statement)

In fact, in the previous structure, there is an extra choice of else if.

Next, I'll give you a complete example, taking weight as an example.

# include int main () {int weight = 0; scanf ("% d\ n", & weigth); if (weight100 & & weight)

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