syntax of conditional operator

4.13 Other operators The 4.13.1 conditional operator (?:) condition operator is the only ternary operator in JavaScript. Its operands can be of any type. The first operand is a Boolean value, and if it is true, the second operand is

The operands of predefined operators in C + + can only be basic data types, and in fact, for many user-defined types, similar operations are Required. For example:Class Complex{PublicComplex (double r=0.0,double i=0.0) {real=r;imag=i;}void Display ()

If you want to get the largest of the two numbers, you can use the IF statement, for example: if (a>b) { max = A; } else{ max = b; } However, the C language provides a simpler method, called the conditional operator, with the syntax

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

1: Get the first few lines of data set observationsproc outobs=5 The *outobs option restricts the number of rows that are displayed and does not limit the number of rows that are read in. The inobs= option restricts the number of rows that are

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

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

Front. Most of the operators in JavaScript are represented by punctuation marks, and a few are represented by keywords, and their syntax is concise and their numbers are indeed quite large. Operators always follow some fixed syntax, and only if you

The operations object of a predefined operator in C + + can only be a basic data type, and in fact, a similar operation is required for many user-defined types. For example: Class Complex {public : complex (double r=0.0,double i=0.0)

The so-called overloading, is to give new meaning. function overloading allows a function name to have multiple functions and perform different operations under different circumstances. Operator overloading (Operator overloading) is also a reason