What is the ternary operator

Detailed explanation of ternary operator

For some selection branch structures, simple conditional operators can be used instead . For example:

if(a<b)
    min=a;
else
    min=b;

You can use the following conditional operator to process

min=(a<b)?a:b;

where "(a7ad0d49c44c8e71e5b95351995aac2f2=0)?a:-a The execution result is the absolute value of a

(3) In the program, by changing the conditional expression The value is assigned directly to a variable. For example:

min=(a9eabeac4c8818aad73659d9842465a49='A'&&ch<='Z' is true, explain ch is an uppercase English letter, so select @ at this time; otherwise, still select the original character ch, and then assign the selected result to the original variable ch.

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