4.2 Item Selection Statements"Teacher, did I pass the level four exam?" ”If the teacher is asked this question, how will he answer? Yes, he will choose different answers according to different conditions:If the test result is greater than or equal
In the previous introduction to semantic inspection, we have initially introduced the function checkbinaryexpression for the semantics of the two-tuple operator expression, and for the convenience of reading, here we give the figure 4.2.2 again. In
4.2 Item Selection Statements"Teacher, did I pass the level four exam?" ”If the teacher is asked this question, how will he answer? Yes, he will choose different answers according to different conditions:If the test result is greater than or equal
Conditional expression:
Expression 1-expression 2: Expression 3
(1) The order in which the conditional expression is executed: first, the expression 1 is solved, if it is not 0 (true), the expression 2 is evaluated, and the value of the expression 2
3 forms of an IF statement
1 an if (expression) statement.
For example:
if (x>y) cout
The execution of this if statement is shown in the following figure.
2 if (expression) statement 1 Else Statement 2
For example:
if (x>y)
If statement
The IF statement can be used to form a branch structure that is judged according to the conditions given to determine which branch segment to execute.
There are three basic forms of if statements in C language
The first form of:
Function of sequence point in C expression evaluation
Abstract:
This article first analyzes the role of a sequence point in the C language expression evaluation: the operand on the left of a sequence point must evaluate the value on the right of the
C language Conditional compilation and C language compilation
I have been learning C language for almost two years. I have been learning this thing, but I have never studied it seriously. In fact, it is very simple. I only blame myself for being too
I have learned C language and C ++ for three years, but I still don't know much about Conditional compilation commands. I can see some excellent source code on the Linux platform, such as uC/OS-II used a lot of compilation instructions, MFC also
logical operators
A logical operator that combines an expression containing a relational operator to form a new expression; The result is either true or false, and the result value is stored with the BOOL type variable.
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