cryptography-utils/shift.cc
2023-10-24 13:14:21 +02:00

25 lines
389 B
C++

#include <iostream>
int main(int argc, char** argv)
{
char* text;
int key;
if(argc < 3)
{
std::cout << "Usage: " << argv[0] << " <plain text> <key>" << std::endl;
return 0;
}
text = argv[1];
key = atoi(argv[2]);
for(int i = 0; text[i] != 0; ++i)
{
char c = text[i]+key;
if(c < 'a') c+=26;
if(c > 'z') c-=26;
std::cout << c;
}
std::cout << std::endl;
return 0;
}