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How to declare strings in C [duplicate]
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Strings in C are represented as arrays of characters.
char *p = "String";
You are declaring a pointer that points to a string stored some where in your program (modifying this string is undefined behavior) according to the C programming language 2 ed.
char p2[] =...
Use of 'const' for function parameters
...ect, thus the const at the end of its declaration)
– CharonX
Oct 1 '18 at 9:54
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show 2 more comments
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std::string formatting like sprintf
...'ll have to do it first in a c-string, then copy it into a std::string:
char buff[100];
snprintf(buff, sizeof(buff), "%s", "Hello");
std::string buffAsStdStr = buff;
But I'm not sure why you wouldn't just use a string stream? I'm assuming you have specific reasons to not just do this:
st...
Finding current executable's path without /proc/self/exe
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Solaris: char exepath[MAXPATHLEN]; sprintf(exepath, "/proc/%d/path/a.out", getpid()); readlink(exepath, exepath, sizeof(exepath));; that's different from getexecname() - which does the equiv of pargs -x <PID> | grep AT_SUN_EXECN...
How to get ASCII value of string in C#
I want to get the ASCII value of characters in a string in C#.
15 Answers
15
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【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...ehashfn(net, daddr, hnum,
saddr, sport);
result = reuseport_select_sock(sk, hash, skb,
sizeof(struct udphdr)); //根据reuseport算法选择一个sock直接返回
if (result)
return result;
matches = 1;
}
result = sk; //使用最大分数的sk作为结...
How can I get a file's size in C? [duplicate]
...ring, which I allocate using malloc() . Just writing malloc(10000*sizeof(char)); is IMHO a bad idea.
8 Answers
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error C2440: \'initializing\' : cannot convert from \'char *\' to \'co...
error C2440: 'initializing' : cannot convert from 'char *' to 'const class std::basic_string *'error C2440: 'initializing' : cannot convert from 'char *' to 'const class std::basic_string<char,...error C2440: 'initializing' : cannot convert from 'char *' to 'const class std::basic_string<char,struct...
How do I properly compare strings in C?
I am trying to get a program to let a user enter a word or character, store it, and then print it until the user types it again, exiting the program. My code looks like this:
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What does the explicit keyword mean?
...s with default params can also act as single arg ctor, e.g., Object( const char* name=NULL, int otype=0).
– maccullt
Sep 24 '08 at 1:23
499
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