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char类型移动跨平台踩过的坑 - C/C++ - 清泛网 - 专注C++内核技术

char类型移动跨平台踩过的坑CFLAG-fsigned-charchar强转int时,发现在x86平台下是按照有符号处理的,但是在ARM32下被当成了无符号导致问题,ARM64正常有符号。经调查,在PC上,char类型默认为signed-char,但是在一些嵌入式设备 char强转...
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char类型移动跨平台踩过的坑 - C/C++ - 清泛网移动版 - 专注C++内核技术

char类型移动跨平台踩过的坑CFLAG-fsigned-charchar强转int时,发现在x86平台下是按照有符号处理的,但是在ARM32下被当成了无符号导致问题,ARM64正常有符号。经调查,在PC上,char类型默认为signed-char,但是在一些嵌入式设备 char强转...
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char类型移动跨平台踩过的坑 - C/C++ - 清泛网 - 专注C/C++及内核技术

char类型移动跨平台踩过的坑CFLAG-fsigned-charchar强转int时,发现在x86平台下是按照有符号处理的,但是在ARM32下被当成了无符号导致问题,ARM64正常有符号。经调查,在PC上,char类型默认为signed-char,但是在一些嵌入式设备 char强转...
https://www.tsingfun.com/it/cp... 

char类型移动跨平台踩过的坑 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术

char类型移动跨平台踩过的坑CFLAG-fsigned-charchar强转int时,发现在x86平台下是按照有符号处理的,但是在ARM32下被当成了无符号导致问题,ARM64正常有符号。经调查,在PC上,char类型默认为signed-char,但是在一些嵌入式设备 char强转...
https://www.tsingfun.com/it/cp... 

char类型移动跨平台踩过的坑 - C/C++ - 清泛网 - 专注C/C++及内核技术

char类型移动跨平台踩过的坑CFLAG-fsigned-charchar强转int时,发现在x86平台下是按照有符号处理的,但是在ARM32下被当成了无符号导致问题,ARM64正常有符号。经调查,在PC上,char类型默认为signed-char,但是在一些嵌入式设备 char强转...
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How to concatenate twice with the C preprocessor and expand a macro as in “arg ## _ ## MACRO”?

...ER(x,y) #define NAME(fun) EVALUATOR(fun, VARIABLE) extern void NAME(mine)(char *x); $ gcc -E xx.c # 1 "xx.c" # 1 "<built-in>" # 1 "<command-line>" # 1 "xx.c" extern void mine_3(char *x); $ Two levels of indirection In a comment to another answer, Cade Roux asked why this needs t...
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“sending 'const NSString *' to parameter of type 'NSString *' discards qualifiers” warning

...he term on its right only if there's nothing on its left side (e. g. const char * and a char const * are non-const pointers to const char, but char *const is a const pointer to non-const char). – user529758 Oct 11 '12 at 4:29 ...
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Check substring exists in a string in C

...lusplus.com/reference/clibrary/cstring/strstr/ So, you'd write it like.. char *sent = "this is my sample example"; char *word = "sample"; char *pch = strstr(sent, word); if(pch) { ... } share | ...
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Finding the max/min value in an array of primitives using Java

... class MinMaxValue { public static void main(String[] args) { char[] a = {'3', '5', '1', '4', '2'}; List b = Arrays.asList(ArrayUtils.toObject(a)); System.out.println(Collections.min(b)); System.out.println(Collections.max(b)); } } Note that Arrays.asList(...
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C语言结构体里的成员数组和指针 - C/C++ - 清泛网 - 专注C/C++及内核技术

... 16 17 #include <stdio.h> struct str{ int len; char s[0]; }; struct foo { struct str *a; }; int main(int argc, char** argv) { struct foo f={0}; if (f.a->s) { printf( f.a->s); } return 0; } 你编...