Deep parsing of question mark expressions

( expression 1)？( expression 2):( expression 3)

If the expression 1 If true, execute the expression 2, Otherwise, execute the expression 3

give an example

int a=5,b=3;

printf（"%d",a>b;a:b);

function

If a Greater than b If established, execute ： The previous is output a. Otherwise execution : The following is output b. In this example, the output is 5

matters needing attention

The question mark expression runs from right to left

for example

int a=8,b=3,c=7;

printf("%d",a>b?a>c?a:c:b>c?b:c);

It can be done in three steps

First step ：b>c?b:c The result is c

The second step ：a>c?a:c The result is a

The third step ： The results of the first two steps correspond to the expression 3 And expressions 2 namely a>b?a:c

The final output is zero a namely 8

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