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- #include <iostream>
- #include <stdlib.h>
- #include <string.h>
- #include <string>
- #include <cctype>
- using namespace std;
- string toLowerCase(string);
- int main()
- {
- string original;
- string xifrada=" ";
- int desplazamiento; // Amb desplaçament negatiu no es desdobla.
- char vocales[][2] = {{'a','4'},{'e','3'},{'i','1'},{'o','0'},{'u','2'}};
- cout << "Introdueix la cadena a xifrar:" << endl;
- cin >> original;
- cout << endl << "Introdueix el calatge: " << endl;
- cin >> desplazamiento;
- cout << endl;
- /** Soles per a Linux *//*
- cout << "Cifrando.";
- system("sleep 1");
- cout << ".";
- system("sleep 1");
- cout << "." << endl;
- system("sleep 1");
- */
- original=toLowerCase(original);
- for (unsigned int a=0;a<original.length();a++)
- {
- if(desplazamiento>0 && a%2==0 && (original[a]=='a' || original[a]=='e' || original[a]=='i' || original[a]=='o' || original[a]=='u'))
- {
- switch(original[a])
- {
- case 'a': xifrada[a] = vocales[0][1]; break;
- case 'e': xifrada[a] = vocales[1][1]; break;
- case 'i': xifrada[a] = vocales[2][1]; break;
- case 'o': xifrada[a] = vocales[3][1]; break;
- case 'u': xifrada[a] = vocales[4][1]; break;
- default: xifrada[a] = '?';
- }
- }
- else
- {
- if((char) (((int)original[a])+desplazamiento) > 'z') xifrada[a] = (char) (( (((int)original[a])+desplazamiento)%(((int)'a')-((int)'z')) )+(int)'a');
- else xifrada[a] = (char) (((int)original[a])+desplazamiento);
- }
- }
- cout << "Cadena xifrada: " << xifrada;
- }
- string toLowerCase(string s){
- for (unsigned int a=0;a<s.length();a++)
- {
- if(s[a]>=((int)'A') && s[a]<=((int)'Z'))
- {
- s[a]= (char)(((int)s[a])+32);
- }
- }
- return s;
- }
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