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 vote194 views1 answer
Array sortieren c
C
1 vote247 views1 answer
Best sites for loop practice c
C
5 votes200 views2 answers
Latex noindent
C
1 vote212 views2 answers
/usr/bin/env: ‘python\r’: No such file or directory
C
0 vote179 views1 answer
Mariadb utf8mb4
C
1 vote242 views1 answer
Hi servicenow
C
-2 votes206 views2 answers
Download file by command line windows
C
1 vote206 views2 answers
How to print the first character of a string in c
C
0 vote227 views1 answer
Execution time of c program
C
1 vote196 views1 answer
How to auto run something on cmd
C