How to write in a buffer at specific byte in c ?-CodePudding

Home > Software design > How to write in a buffer at specific byte in c ?

How to write in a buffer at specific byte in c ?

Time：10-25

I have a char buffer of length 50 bytes. In this buffer, at 20-21 bytes, I want to write a short number, of size 2 bytes, say -1234, specifically at those bytes only? How can I do that?

CodePudding user response：

Looks trivial. Not sure whether this is what you want.

#include <cstring>

char* pc = ...;
short num = ...;

std::memcpy(pc   20, &num, 2);

Page link：https//www.codepudding.com/Softwaredesign/165548.html

Prev:Can not create instance of the ViewModel class

Next:Performing calculations on elements, and retrieving index the index of an element in a vector

Tags：

Links：
CodePudding