Question

If the name of your program is ENCODE and the data file name is INPUT.DATA, then executing "ENCODE INPUT.DATA” will encode the data in INPUT.DATA into signals with the Manchester encoding scheme, and generate an output file named OUTPUT.SIGNAL. We assume that the synchronization is accomplished and we know the boundaries of the symbols in the signals. The OUTPUT.SIGNAL will contain signals like: 1-V+VI+V-VI-V+VI+V-V +V-VI-V+VI, where "l" denotes a boundary of a symbol in the signals, "-" represents the negative voltage, and “+V” represents the positive voltage.

Answer 1

ManchesterEncoding.cpp File (Program with comments for understanding):

#include<iostream>
#include<stdlib.h>
#include<fstream>
#include<vector>
#include<string>
using namespace std;
//function to encode argument string into manchester encoding
string manchesterEncoding(string data){
string encString = "", zero="|+V-V", one="|-V+V";
for(char i=0;i<data.size();i++){   //traverse char by char
if(((int)data[i] - '0')==0){   //if 0 then write high to low
encString.append(zero);
}else if(((int)data[i] - '0')==1){   //if 1 then write low to high
encString.append(one);
}else{   //otherwise exit and return invalid data string
return "Invalid Data";
}
}
encString.append("|");
return encString;   //return the converted string
}
int main(int argc, char* argv[]){
string line;
if(argc!=2){   //if no input filename is given then exit
       cout<<"No File name given or Invalid Filename given";
       exit(0);
   }
  
ifstream fread(argv[1]);   //open and read the input file
ofstream fwrite("OUTPUT.SIGNAL");   //open output file for writing
if(fread && fwrite){   //if files opened successfully
while(fread){
getline(fread, line); //read input line
fwrite<<manchesterEncoding(line)<<endl;   //write encoded signal into output file
}
}else{   //if input or output file couldnt be opened
!fread?(cout<<"Read error"):(cout<<"Write error");
}
   //close the files
fread.close();
fwrite.close();
   cout<<"File written successfully";   //output the message
return 0;
}

INPUT.DATA file:

1001011 21010111010100111101001 3 100111010111000110
OUTPUT.SIGNAL file:

1 2 3 4 5 | +V-V] +V-VI-V+V| +V-VI-V+VI-V+V| |-V+V+V-VI-V+VI+V-VI-V+VI-V+VI-V+V | +V-VI-V+V+V-VI-V+VI+V-VI +V-VI-V+VI-V+VI-V+VI-V+V | +V-VI-V+V+V-VI +V-VI-V+V| | -V+V+V-VI +V-VI-V+VI-V+VI-V+V+V-VI-V+V+V-VI-V+VI-V+VI-V+V+V-VI +V-V | +V-VI-V+VI-V+V+V-V| |-V+VI+V-VI +V-VI-V+VI-V+VI-V+VI+V-VI-V+VI+V-VI-V+VI-V+VI-V+VI+V-VI +V-VI +V-VI-V+VI-V+VI+V-V|

CONSOLE OUTPUT:

C:H. Command Prompt C:\Users\achar OneDrive\Documents\C++>g++ ManchesterEncoding.cpp -o ENCODE C:\Users\achar\OneDrive\Documents\C++>ENCODE INPUT.DATA File written successfully C:\Users\achar OneDrive\Documents\C++).