4. procedure flow structure

C/C++ Support the most basic three kinds of program running structure ： Sequential structure , Selection structure , Loop structure

1. Sequential structure ： The program is executed in sequence , No jump
2. Selection structure ： According to whether the conditions are met , Selectively perform corresponding functions
3. Loop structure ： According to whether the conditions are met , Loop executes a piece of code many times

4.1 Selection structure

4.2 Loop structure

4.3 Jump statements

4.3.1 break sentence

break Timing of use ：

1. Appear in the switch In a conditional statement , The effect is to stop case And jump out of switch.
2. Appears in a loop statement , The function is to jump out of the current loop statement .
3. In nested loops , Jump out of the nearest inner loop statement .

4.3.2 continue sentence

In a loop statement , Jump out the remaining unexecuted statements in this loop , Continue with next cycle .

4.3.3 goto sentence

effect ： You can jump statements unconditionally .

grammar ：goto Mark .

explain ： If the name of the tag exists , Execute to goto sentence , Will jump to the mark position .