Zeroing out memory: Usememset()right after allocation to fill the memory with zeros. Example: int*arr=malloc(10*sizeof(int)); if(arr!=NULL){ memset(arr,0,10*sizeof(int)); } Copying data immediately after allocation: If you have data ready to be copied into the allocated memory,memcpy...
memset() works on raw memory, so you filled the bytes of 'a' with the value 50, which in turn makes every double value in a be 0x3232323232323232, which who knows what that is. If you want to fill 'a' with doubles having the value 50.0, you should use std::fill(). ...
how i use memset()? heres my actual code: 1234 if(Pixels==NULL)VirtualFree(Pixels, 0,MEM_RELEASE);; unsigned int PixelsCount =SizeWidth*SizeHeight*sizeof(unsigned int); Pixels = (unsigned int*) VirtualAlloc(0, PixelsCount,MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE); memset(Pixels,NewColor...
Use thegetnameinfoFunction to IP Address to Host Name in C Thegetnameinfofunction is used in conjunction withgetaddrinfoin this case, and it retrieves the hostnames for corresponding IP addresses. Notice that we process the user input from the first command-line argument and pass it as theget...
In response to MotooTanaka Hi, thank you for answer. I want to use printf() family in situation something like this: void UART_printf(char *arg_list, ...) { va_list arg_buffer; va_start(arg_buffer, arg_list); memset(uart_printf_buf, 0, sizeof(uart_printf_buf)); vsprintf(...
C program not linking to CRT calls memset() for unknown reasons C/C++ : converting std::string to const char* I get the error : left of '.c_str' must have class/struct/union type is 'char *' C# to C++ dll - how to pass strings as In/Out parameters to unmanaged functions ...
Use a text editor to create a file named syscnt.c with the code below: #include <stdio.h> #include <stdlib.h> #include <inttypes.h> // The function we are interested in counting through (see main) void code_to_measure(){ int sum = 0; for(int i = 0; i < 1000000000; ++i)...
https://banu.com/blog/2/how-to-use-epoll-a-complete-example-in-c/ Thursday, 2 June 2011 @ 1238 GMT by Mukund Sivaraman Network servers are traditionally implemented using a separate process or thread per connection. For high performance applications that need to handle a very large number of...
We will also learn how to clear a dynamicchararray using thefree()function, so let’s get started. Use thememset()Function to Clear acharArray in C Thememset()function is part of the<string.h>header file in C. It is primarily used to fill a block of memory with a specified value...
How to use epoll? A complete example in C Thursday, 2 June 2011 @ 1238 GMT by Mukund Sivaraman Network servers are traditionally implemented using a separate process or thread per connection. For high performance applications that need to handle a very large number of clients simultaneously, this...