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How to find memory leak in a C++ code/project?
..., you should use a delete so that you free the same memory you allocated:
char* str = new char [30]; // Allocate 30 bytes to house a string.
delete [] str; // Clear those 30 bytes and make str point nowhere.
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Reallocate memory only if you've deleted. In the code below, str acquires a new addre...
How do I return multiple values from a function in C?
... just silly. In that case, I would return the int and pass the string as a char * and a size_t for the length unless it's absolutely vital for the function to allocate it's own string and/or return NULL.
– Chris Lutz
Apr 12 '10 at 6:14
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Undefined reference to static constexpr char[]
I want to have a static const char array in my class. GCC complained and told me I should use constexpr , although now it's telling me it's an undefined reference. If I make the array a non-member then it compiles. What is going on?
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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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Regex to Match Symbols: !$%^&*()_+|~-=`{}[]:";'?,./
...al letters represent the negation of their lowercase counterparts.
\W will select all non "word" characters equivalent to [^a-zA-Z0-9_]
\S will select all non "whitespace" characters equivalent to [ \t\n\r\f\v]
_ will select "_" because we negate it when using the \W and need to add it back in
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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(...
C语言结构体里的成员数组和指针 - c++1y / stl - 清泛IT社区，为创新赋能！
...#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);
&...
What type of hash does WordPress use?
...have access to the DB, using MyPHPAdmin you can change the PW to "MyPass", select MD5 in the "Function" dropdown and it will save as a straight MD5. Sign into Wordpress, and it will change it to the "salted" version with the $P$B__/ added.
– BillyNair
Oct 26 '1...
Is there a printf converter to print in binary format?
...he %d to %c, because it should be even faster (%d has to perform digit->char conversion, while %c simply outputs the argument
– user719662
May 27 '16 at 15:20
3
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How do I create a random alpha-numeric string in C++?
I'd like to create a random string, consisting of alpha-numeric characters. I want to be able to be specify the length of the string.
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