Two bytes to int c

// bytes_to_int_example.cpp
// Output: port = 514

// I am assuming that the bytes the bytes need to be treated as 0-255 and combined MSB -> LSB

// This creates a macro in your code that does the conversion and can be tweaked as necessary
#define bytes_to_u16(MSB,LSB) (((unsigned int) ((unsigned char) MSB)) & 255)<<8 | (((unsigned char) LSB)&255) 
// Note: #define statements do not typically have semi-colons
#include <stdio.h>

int main()
{
  char buf[2];
  // Fill buf with example numbers
  buf[0]=2; // (Least significant byte)
  buf[1]=2; // (Most significant byte)
  // If endian is other way around swap bytes!

  unsigned int port=bytes_to_u16(buf[1],buf[0]);

  printf("port = %u \n",port);

  return 0;
}

Source: stackoverflow.com

Similar codes

0 vote233 views1 answer
How to change background color in c programming
C
0 vote199 views1 answer
Two way communication between child and parent processes in C using pipes
C
2 votes217 views5 answers
Arduino internal pull up resistor
C
0 vote233 views1 answer
E sharm card jobkhozo.com
C
0 vote216 views1 answer
C read csv
C
0 vote195 views1 answer
Check if string starts with c
C
0 vote213 views1 answer
How we can strore a nested structure values in arrays
C
11 votes240 views6 answers
Malloc in c
C
0 vote226 views1 answer
Python project script run
C
13 votes196 views2 answers
Python driver.get
C