String to Binary Conversion Problem

[iamiel]

I am 1st year student and i'm new to programming. Please Help for my problem. My program has no error already but the conversion always return 0 and no 1 at all. i.e. I save dog on the text pad then after i save it when i try to convert it always return all zero. It is very hard for me as beginner. Please Help me with this.

insert

#include<iostream.h>
#include<conio.h>
#include<fstream.h>
#include<string.h>
#include<stdio.h>
#include<stdlib.h>

fstream f;
char ch;
class ConSys{
  public:
    void headr();
    void intrfce();
    void view();
    void insert();
    int conBi();
    int conStr();
};

void main(){
  f.open("IO.TXT",ios::in);
  if(f.fail()) f.open("IO.TXT",ios::out);
  f.close();
  ConSys cs;
   while(1){
    clrscr();
    cs.headr();
    cs.intrfce();
    ch=getch();
    switch(ch){
      case 's': case 'S':
    clrscr();
    cs.headr();
    textcolor(BLUE);
    if(cs.conBi()==0){
      gotoxy(34,12);
      cputs("SUCCESSFUL!!!");
    }else{
      gotoxy(28,12);
      cputs("Invalid length of string");
    }
    gotoxy(80,25);
    getch();
    break;
      case 'b': case 'B':
    clrscr();
    cs.headr();
    textcolor(BLUE);
    if(cs.conStr()==0){
      gotoxy(34,12);
      cputs("SUCCESSFUL!!!");
    }else if(cs.conStr()==1 || cs.conStr()==2){
      gotoxy(28,12);
      cputs("Invalid length of string");
    }else{
      gotoxy(31,12);
      cputs("There is unwanted");
      gotoxy(29,13);
      cputs("character on text file");
    }
    gotoxy(80,25);
    getch();
    break;
      case 'v': case 'V':
    cs.view();
    getch();
    break;
      case 'i': case 'I':
    cs.insert();
    getch();
    break;
      case 'q': case 'Q':
    clrscr();
    cs.headr();
    textcolor(BLUE);
    gotoxy(35,12);
    cputs("Exiting...");
    getch();
    exit(0);

    }

  }
}

int ConSys::conStr(){  //Binary to String
  int i, oct=256, octInt=0, pos=0;
  char msgOut[2000], strIn[2000];
  for(i=0; i<2000; i++){
    msgOut[i]='\0';
    strIn[i]='\0';
  }
  f.open("IO.TXT",ios::in);
  f.getline(strIn,2000);
  f.close();
  for(i=0; i<=1600; i++){
    if(strIn[i] == '\0'){
      if(i%8==0) break;
      else return 2;
    }
    if(i==1600) return 1;
    if(strIn[i] != '0' && strIn[i] != '1') return 3;
  }
  for(i=0; i<1600; i++){
    if(strIn[i] == '\0') break;
    oct /= 2;
    if(strIn[i] == '1') octInt /= oct;
    if(oct == 1){
      msgOut[pos] = (char)(octInt);
      oct =256;
      octInt = 0;
      pos++;
    }
  }
  f.open("IO.TXT", ios::out);
  f<<msgOut;
  f.close();
  return 0;
}

int ConSys::conBi(){  //String to Binary
  int i=0, j, k, biInt=0, charInt, sumBi;
  char bi[2000], strIn[2000];
  for(i=0; i<2000; i++){
    bi[i]='\0';
    strIn[i]='\0';
  }
  f.open("IO.TXT",ios::in);
  f.getline(strIn,2000);
  f.close();
  for(i=0; i<=200; i++){
    if(strIn[i] == '\0') break;
    if(i==2000) return 1;
  }
  for(i=0; i<200; i++){
    if(strIn[i] == '\0') break;
    charInt = (int)(strIn[i]);
    sumBi = 128;
    for(j=0; j<8; j++){
      if(charInt >= sumBi){
    bi[biInt] = '1';
    charInt -= sumBi;
      }
      else bi[biInt] = '0';
      biInt++;
      sumBi / 2;
    }
  }
  f.open("IO.TXT", ios::out);
  f<<bi;
  f.close();
  return 0;
}

void ConSys::view()
{
  char msgIn[1000];
  clrscr();
  headr();
  textcolor(YELLOW);
  gotoxy(37,6);
  cputs("MESSAGE");
  f.open("IO.TXT", ios::in);
  textcolor(GREEN);
  gotoxy(4,8);
  f.getline(msgIn, 1000);
  f.close(); cputs(msgIn);
  gotoxy(80,25);
}

void ConSys::insert(){
  char msgOut[300], c;
  int i;
  for(i=0; i<300; i++) msgOut[i]='\0';
  clrscr();
  headr();
  textcolor(BLUE);
  gotoxy(32,21);
  cputs("Your message must not more than 200 characters.");
  textcolor(WHITE);
  gotoxy(37,6);
  cputs("MESSAGE");
  gotoxy(4,8);
  i=0;
  while(i<200){
     c=getch();
     if(c==13){
       f.open("IO.TXT", ios::out);
       f<<msgOut;
       f.close();
       textcolor(BLUE);
       gotoxy(32,21);
       cputs("                                        SAVE!!!");
       gotoxy(80,25);
       return;
     }
     if(c == 8){
    if(i!=0){
       putch('\b');
       putch(NULL);
       putch('\b');
       --i;
       msgOut[i] = '\0';
       continue;
    }continue;
     }
     msgOut[i] = c;
     cout<<c;
     i++;
  }
  textcolor(BLUE);
  gotoxy(32,21);
  cputs("                Maximum length of string. SAVE!");
  f.open("IO.TXT", ios::out);
  f<<msgOut;
  f.close();
}

void ConSys::headr(){
  textcolor(BLUE+BLINK);
  gotoxy(31,2); cputs("CONVERSION SYSTEM");
  gotoxy(21,3); cputs("(String to Binary / Binary t String)");
  int i; textcolor(RED);
  gotoxy(3,4);
  for(i=0; i<76; i++) cputs("_");
  gotoxy(3,22);
  for(i=0; i<76; i++) cputs("_");
  textcolor(YELLOW);
  gotoxy(4,24);
  cputs("Name: COS 216");
  gotoxy(4,25);
  cputs("Section: BE1AA");
  gotoxy(52,24);
  cputs("Teacher: Ms. Jinky Tumasis");
  gotoxy(63,25);
  cputs("Subject: COS216");
}

void ConSys::intrfce(){
  textcolor(GREEN);
  gotoxy(15,8);  cputs("Conversion:");
  gotoxy(20,10); cputs("String to Binary");
  gotoxy(20,11); cputs("Binary to String");
  gotoxy(19,13); cputs("View content in text file (\"IO.TXT\")");
  gotoxy(19,14); cputs("Insert message in text file (\"IO.TXT\")");
  gotoxy(19,16); cputs("Quit");
  textcolor(YELLOW);
  gotoxy(16,10); cputs("[S]");
  gotoxy(16,11); cputs("[B]");
  gotoxy(15,13); cputs("[V]");
  gotoxy(15,14); cputs("[I]");
  gotoxy(15,16); cputs("[Q]");
  gotoxy(33,20); cputs("Choice:");cout<<ch;

}

[vart]

you need to replace your compiler and book
iostream.h is not only outdated, it is ancient

I would get rid of conio.h and all its function - since it make your code not portable and most programmers will not be able to compile it on their compilers.

And also you need to remove stdio.h - since it handles IO routines for C, and you are using <iostream> for that purposes in C++