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Does C have a “foreach” loop construct?
...de *(item) = (list); (item); (item) = (item)->next)
int
main(int argc, char *argv[])
{
list_node list[] = {
{ .next = &list[1], .data = "test 1" },
{ .next = &list[2], .data = "test 2" },
{ .next = NULL, .data = "test 3" }
};
FOR_EACH(item, list)
...
How can I remove non-ASCII characters but leave periods and spaces using Python?
...h a .txt file. I want a string of the text from the file with no non-ASCII characters. However, I want to leave spaces and periods. At present, I'm stripping those too. Here's the code:
...
What should main() return in C and C++?
.... The valid C++ main signatures are:
int main()
and
int main(int argc, char* argv[])
which is equivalent to
int main(int argc, char** argv)
It is also worth noting that in C++, int main() can be left without a return-statement, at which point it defaults to returning 0. This is also true wi...
Parsing command-line arguments in C?
... write a program that can compare two files line by line, word by word, or character by character in C. It has to be able to read in command line options -l -w -i or -- ...
...
How do I count the number of occurrences of a char in a String?
...
Guava equivalent: int count = CharMatcher.is('.').countIn("a.b.c.d"); ...As answered by dogbane in a duplicate question.
– Jonik
Aug 12 '13 at 17:00
...
Is the “struct hack” technically undefined behavior?
...sed as an array. It's passed to strcpy, in which case it decays to a plain char *, which happens to point to an object which can legally be interpreted as char [100]; inside the allocated object.
– R.. GitHub STOP HELPING ICE
Sep 14 '10 at 23:34
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How come an array's address is equal to its value in C?
...rray, not the size of a single element. For example, with code like this:
char array[16];
printf("%p\t%p", (void*)&array, (void*)(&array+1));
We can expect the second pointer to be 16 greater than the first (because it's an array of 16 char's). Since %p typically converts pointers in hexa...
C/C++中的段错误（Segmentation fault） - C/C++ - 清泛网 - 专注C/C++及内核技术
...ce
例子2：
Code:
#include <stdio.h>
int main(){
char *p;
p = NULL;
*p = 'x';
printf("%c", *p);
return 0;
}
很容易发现，这个例子也是试图往内存地址0处写东西。
这里我们通过gdb来查看段错误所在的行
...
Difference between fprintf, printf and sprintf?
...tream is currently pointing.
sprintf writes formatted text to an array of char, as opposed to a stream.
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C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...关联容器hash_set、hase_multiset、hash_map和hash_multimap。
vector<char> 作为string的替代。(见第13条)
vector作为标准关联容器的替代。(见第23条)
几种标准的非STL容器，包括数组、bitset、valarray、stack、queue和priority_queue。
你是否关心容器...