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C read file line by line
...stdio.h>
#include <stdlib.h>
int main(void)
{
FILE * fp;
char * line = NULL;
size_t len = 0;
ssize_t read;
fp = fopen("/etc/motd", "r");
if (fp == NULL)
exit(EXIT_FAILURE);
while ((read = getline(&line, &len, fp)) != -1) {
printf("Retri...
“Unknown class in Interface Builder file” error at runtime
...n't need to recreate the files.
Using XCode 4, in the Project Navigator, select the .m file that contains the class that it is complaining about
Go to View->Utilities->Show File Inspector(this will show the File Inspector to the right, with that .m-file info)
Open the Target Membership secti...
Converting any string into camel case
...elcase/5 . Care to contribute a version that can handle (remove) non-alpha chars? camelize("Let's Do It!") === "let'SDoIt!" sad face. I'll try myself but fear I will just add another replace.
– Orwellophile
May 19 '15 at 7:22
...
Unicode与UTF-8互转(C语言实现) - C/C++ - 清泛网 - 专注C/C++及内核技术
...
字的编码方案. Unicode的学名是"Universal Multiple-Octet Coded Character Set",
简称为UCS. UCS可以看作是"Unicode Character Set"的缩写.
Unicode当然是一个很大的集合, 现在的规模可以容纳100多万个符号. 每个符号的编码都
不一样, 比如, U+0639表...
Difference between malloc and calloc?
...ngful. Also note that calloc doesn't necessarily do what you think for non-char types. Nobody really uses trap representations any more, or non-IEEE floats, but that's no excuse for thinking your code is truly portable when it isn't.
– Steve Jessop
Oct 8 '09 at...
What is the string length of a GUID?
I want to create a varchar column in SQL that should contain N'guid' while guid is a generated GUID by .NET ( Guid.NewGuid ) - class System.Guid.
...
Assign one struct to another in C
...ment is supported for structs. However, there are problems:
struct S {
char * p;
};
struct S s1, s2;
s1.p = malloc(100);
s2 = s1;
Now the pointers of both structs point to the same block of memory - the compiler does not copy the pointed to data. It is now difficult to know which struct insta...
How to list files in a directory in a C program?
... function to print the content of a given folder */
void show_dir_content(char * path)
{
DIR * d = opendir(path); // open the path
if(d==NULL) return; // if was not able return
struct dirent * dir; // for the directory entries
while ((dir = readdir(d)) != NULL) // if we were able to read so...
Why do I get “a label can only be part of a statement and a declaration is not a statement” if I hav
...("Hello ");
goto Cleanup;
Cleanup: ; //This is an empty statement.
char *str = "World\n";
printf("%s\n", str);
}
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How does grep run so fast?
... how far ahead it can skip in the input whenever it finds a
non-matching character.
GNU grep also unrolls the inner loop of Boyer-Moore, and sets up the
Boyer-Moore delta table entries in such a way that it doesn't need to
do the loop exit test at every unrolled step. The result of this ...