将字符串从const char *复制到char [500]; [英] Copy the string from const char* To char[500];

问题描述

大家好

您能帮忙吗?

我的部分代码需要这样做

Hi all

can you help?

part of my code i need to do this

const char * p= "ddddd";<br />char q[500];<br /><br />I want to copy the sting in p to q[]?<br /><br />

推荐答案

如果您使用C语言进行编程，则:

If you''re programming in C, then:

strncpy( q, p, 499 );
q[499] = ''\0'';

可以解决问题，并且无论字符串多长都可以工作.如果您想进一步混淆事物，则可以利用strncpy的返回值将这两行合并为一:

will do the trick and work however long the string is. If you''d like to obfuscate things a bit more then you can combine the two lines into one by exploiting the return value of strncpy:

strncpy( q, p, 499 )[ 499 ] = ''\0'';

除非您希望在代码审查中部署极端讽刺，否则我不会使用单行版本.还有一些交叉眼的维护程序员.

干杯，

Ash

I wouldn''t use the single line version unless you want extreme sarcasm deployed in code reviews. And a few cross eyed maintenance programmers.

Cheers,

Ash

我认为您可以像这样复制str:

i think u can copy str like this:

if(strlen(p)<500)
{
  strcpy(q, p);
}
else
{
  strncpy(q, p, 500-1);
}

如有任何问题，请随时与我联系:酷:！

Pls feel free to contact me if any question:cool:!

<br />  const char * p= "ddddd";<br />  char q[500];<br />  int i;<br />  i=0;<br />  while (p[i] && i < sizeof(q) - 1 )<br />    q[i++] = p[i];<br />  q[i]=''\0'';<br />

:)

:)

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