28 lines
452 B
C++
28 lines
452 B
C++
#include <iostream>
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void shift(char* text, int key)
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{
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std::cout << key << ": ";
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for(int i = 0; text[i] != 0; ++i)
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{
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char c = std::tolower(text[i])-key;
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if(c < 'a') c+=26;
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if(c > 'z') c-=26;
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std::cout << c;
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}
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std::cout << std::endl;
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}
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int main(int argc, char** argv)
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{
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if(argc < 2)
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{
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std::cout << "Usage: " << argv[0] << " <ciphertext>" << std::endl;
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return 0;
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}
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for(int i = 1; i < 26; ++i)
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{
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shift(argv[1], i);
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}
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return 0;
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}
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