first commit

third_party/tinyexpr/tinyexpr_test.cpp

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+
+#include "tinyexpr.h"
+#include <iostream>
+
+int main() {
+    // change expression to whatever you like
+    std::string input = "(3 + 5) * 5 + 4^2";
+    do
+    {
+        // no except check
+        auto result = te_interp(input.c_str(), 0);
+        std::cout << input << " = " << result << std::endl;
+        std::cout << "please input math expression:" << std::endl;
+        std::getline(std::cin, input);
+    } while (input != "quit");
+
+    return 0;
+}