Basic concepts of C ++ cyclic statements

In C ++ programming languages, many application methods are the same as those in C. However, as an upgraded version, there are many differences. For example, in the application of C ++ loop statements. Here we will introduce the concepts of C ++ loop statements in detail.

• Analysis of C ++ formatted string-related applications
• How to Implement C ++ print address information
• Detailed description of how C ++ generates random numbers
• Practical application skills of C ++ linked list operations
• A Brief Introduction to the C ++ Operating Mechanism

The commonly used C ++ loop statements are mainly if/while/for, where if and for are more frequently used.

We can divide the components of the C ++ loop statement into the following four parts:

<1> initialize the cyclic variable, that is, define the cyclic variable. It is a non-essential element of a loop statement and can be replaced by other Defined variables.

<2> when the cyclic condition is initialized, the final result of the cyclic condition is a number.

<3> change the value of the Loop Variable/condition.

<4> define the actual purpose of a loop

The for statement can be interpreted:

 
 

  
  
for ( <1>; <2>; <3>; ) <4> 
 
 

The if statement is interpreted:

 
 

  
  
<1>；  
  
  
if <2>；  
  
  
{  
  
  
<4>；<3> 
  
  
}  
  
  
else  
  
  
{   
  
  
<4>；<3> 
  
  
} 
 
 

The while statement is interpreted:

 
 

  
  
<1> ；  
  
  
while( <2> )  
  
  
{  
  
  
< 4 >；< 3 > 
  
  
} 
 
 

Similarly, the do while statement can be interpreted

 
 

  
  
<1> ；  
  
  
do <4>；<3> while <2> 
 
 

In summary, when writing a loop statement, you only need to complete the C ++ loop statement according to the attributes of each element. This memory method can help us to remember the rules of C ++ statements more quickly and reasonably. Of course, it can also be applied to all statements in memory C ++.