是否有职能或图书馆可以将
实例:
1
1l
1ul
42e+10
0x2aLL
01234u
...
atoi
在0x...和suffixes u/l方面有一些问题。
是否有职能或图书馆可以将
实例:
1
1l
1ul
42e+10
0x2aLL
01234u
...
atoi
在0x...和suffixes u/l方面有一些问题。
除此以外,您需要/必须通过<代码>0作为换算基,在这种情况下,它执行通常的C公约,即:主要编码<0信号 octal,0x
,信号六dec,和1-9
信号 decimal。
你们可以使用扫描仪,检查返回价值,看看它是否有用,例如:
bool parseValue (const char *buffer, long &value)
{
if (sscanf(buffer,"%ld",&value)==1) return true;
if (sscanf(buffer,"0x%lx",&value)==1) return true;
...
return false;
}
You can easily add more kinds of formats to this list. To extend this for floating point values as well, scan the buffer in a floating point value then cast or round it to the integer value, like this:
bool parseValue (const char *buffer, long &value)
{
if (sscanf(buffer,"%ld",&value)==1) return true;
if (sscanf(buffer,"0x%lx",&value)==1) return true;
...
double d;
if (sscanf(buffer,"%lf",&d)==1) {value=d; return true;}
...
return false;
}
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