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Tautology
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Tautology is a programming language in which all of the programs and input evaluate to true. It is not Turing complete.
Implementation
It is implemented in C++:
#include <iostream>
using namespace std;
int main()
{char x[65535];
while(1){cout << "> ";cin >> x;cout << "True\n";} //Takes an input and outputs true
return 0;}