PHPecho hexadecimal value & lt ;? Phpecho & nbsp; 0x9f ;? & Gt; the output of the running program is 159. The hexadecimal value of 159 is 9f. why should I add 0x first? Why can we directly output a hexadecimal value instead of an error? PHP echo hexadecimal value
Echo 0x9f;
?>
The program output 159.
The hexadecimal value of 159 is 9f. why should I add 0x first?
Why can we directly output a hexadecimal value instead of an error? Share To: run the program output 159. The hexadecimal value of 159 is 9f. why should I add 0x first? Why can we directly output a hexadecimal value instead of an error? 'Data-pics = ''>
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All sources derived from C are expressed in this way. if you have to find out why, ask Bell telephone lab.
Hex number system (Hex number system) does not take H (but basic uses H). Instead, it needs x. It can be seen that foreigners do not strictly abide by the "rules ".
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This is c's fault. if you don't understand it, just accept it.
