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C++ Program on Encryption and Case Conversion
This solution has two files main.cpp and Filter.h
//file - main.cpp
#include #include #include #include"Filter.h" using namespace std; void open_inputFile(fstream& inputFile, char inFileName[]); void open_outputFile(fstream& outputFile, char outFileName[]); void printFile(fstream& outputFile); const int SIZE = 81; int main(){ int filterType = 0; fstream inputFile, outputFile; char inFileName[SIZE]; char outFileName[SIZE]; open_inputFile(inputFile, inFileName); open_outputFile(outputFile, outFileName); cout<<"\n Enter 1 for Upper case and 2 for Encryption: "; cin>>filterType; if(filterType ==1){ UpperCaseFilter upperFilter; upperFilter.doFilter(inputFile, outputFile); } else{ EncryptionFilter encryptionfilter; encryptionfilter.doFilter(inputFile, outputFile); } inputFile.close(); outputFile.close(); outputFile.open(outFileName); cout<<"\n Filter file is : "<< endl; printFile(outputFile); outputFile.close(); return 0; } void open_inputFile(fstream& inputFile, char inFileName[]){ cout<<"\n This program modified a version of a text file"; cout<<"\n Enter name of input file (input.txt): "; cin>>inFileName; inputFile.open(inFileName, ios::in); if(!inputFile) { cout<<"\n The file "< >outFileName; outputFile.open(outFileName, ios::out); if(!outputFile) { cout<<"\n The file "<
//file File.h
#include using namespace std; class Filter{ public: void doFilter(fstream& in_stream, fstream& out_stream); protected: virtual char transform(char ch) = 0; }; class UpperCaseFilter: public Filter{ protected: char transform(char ch){ return islower(ch)?(ch-32):ch; } }; void Filter:: doFilter(fstream& in, fstream& out) { char ch; while(in.get(ch)){ ch = transform(ch); out<
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