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Program to represent or compress ‘2ABCDE' to string ‘AABCDE'’

Posted By: Easy Tutor     Category: C++ Programming     Views: 6390

Each line in the input file will be of the format ‘nA...’ where n, the duplication factor, is an integer between 2 and 99 and A is an uppercase alphabetic character. A string may contain single characters not prefixed with a duplication factor. If this were not the case, for instance, the string ‘AABCDE’ would be compressed to ‘2A1B1C1D1E’. To avoid this, single characters will not be prefixed with a duplication factor. The string ‘AABCDE’ would be compressed to ‘2ABCDE’. The maximum length of each line in input file is 80 characters.

The uncompressed string, 40 characters per line (it may be necessary to break an uncompressed string over multiple lines).

Code for Program to represent or compress ‘2ABCDE' to string ‘AABCDE'’ in C++ Programming

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


 int main( )
    {
       clrscr( );

       fstream File("CP-21.txt",ios::in|ios::nocreate);

       if(!File)
      {
         cout<<"\n Unable to open the input file."<<endl;
         cout<<"\n Press any key to exit.";

         getch( );
         exit(EXIT_FAILURE);
      }

       char Data[100]={NULL};

       do
      {
         strset(Data,NULL);

         File.getline(Data,80);

         if(strcmp(Data,NULL)==0)
        break;

         char Duplication_factor[10]={NULL};

         int index=0;
         int length=strlen(Data);

         do
        {
           strset(Duplication_factor,NULL);

           while(isdigit(Data[index]))
              {
             char Temp[5]={NULL};

             Temp[0]=Data[index];

             strcat(Duplication_factor,Temp);

             index++;
              }

           int duplication_factor=0;

           duplication_factor=atoi(Duplication_factor);

           if(duplication_factor==0)
              cout<<Data[index];

           else
              {
             for(int count=0;count<duplication_factor;count++)
                cout<<Data[index];
              }

           index++;
        }
         while(index<length);

         cout<<endl;
      }
       while(1);

       File.close( );

       getch( );
       return 0;
    }
  
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Easy Tutor
Easy Tutor author of Program to represent or compress ‘2ABCDE' to string ‘AABCDE'’ is from United States. Easy Tutor says

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Ian Serben from United States Comment on: Jul 03
How about the other way around? If I input say, 2A3Bc, I want to get the output AABBBc. Also, how about if I don't want to get the innput from an external .txt file?

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