Impl reverse printing, refactorings and fixes

.gitignore

@@ -4,3 +4,4 @@ src/*.o
 compile_commands.commands.json
 compile_commands.json
 .clangd/
+.cache/

src/main.cpp

@@ -36,20 +36,21 @@ const char8_t* ilgop = u8"일곱";
 const char8_t* yudul = u8"여덟";
 const char8_t* ahop = u8"아홉";
 
-const char8_t* yul = u8"열";
+const char8_t* yul = u8"열";        // 10
-const char8_t* sumul = u8"스물";
+const char8_t* sumul = u8"스물";    // 20
-const char8_t* suhlun = u8"서른";
+const char8_t* suhlun = u8"서른";   // 30
-const char8_t* mahun = u8"마흔";
+const char8_t* mahun = u8"마흔";    // 40
-const char8_t* shin = u8"쉰";
+const char8_t* shin = u8"쉰";       // 50
-const char8_t* yesun = u8"예순";
+const char8_t* yesun = u8"예순";    // 60
-const char8_t* ilhun = u8"일흔";
+const char8_t* ilhun = u8"일흔";    // 70
-const char8_t* yuhdun = u8"여든";
+const char8_t* yuhdun = u8"여든";   // 80
-const char8_t* ahun = u8"아흔";
+const char8_t* ahun = u8"아흔";     // 90
 
 void help() {
     puts("Usage:");
     puts("  --max <integer> - set maximum value for generated value (default 999,999,999,999)");
     puts("  [-a | --alt] - use alternate Korean Numbers (up to 99)");
+    puts("  [-r | --reverse] - display Korean form first");
 }
 
 const char8_t* digit_to_kword(int n) {
@@ -238,39 +239,7 @@ std::u8string value_to_korean_alt(unsigned long long value) {
     return s;
 }
 
-int main(int argc, char **argv) {
+void printValue(unsigned long long value) {
-    unsigned long long max = 9999999999999;
-    bool isAlt = false;
-
-    --argc; ++argv;
-    while(argc > 0) {
-        if(std::strcmp(argv[0], "--help") == 0 || std::strcmp(argv[0], "-h") == 0) {
-            help();
-            return 0;
-        } else if(std::strcmp(argv[0], "--max") == 0 && argc > 1) {
-            --argc; ++argv;
-            max = std::strtoull(argv[0], nullptr, 0);
-        } else if(std::strcmp(argv[0], "-a") == 0 || std::strcmp(argv[0], "--alt") == 0) {
-            isAlt = true;
-        }
-        --argc; ++argv;
-    }
-
-    if(isAlt) {
-        printf("Using alternate Korean numbers, ");
-        if(max > 99) { max = 99; }
-    }
-    printf("Maximum value is set to %llu\n", max);
-
-    unsigned long long value;
-    {
-        std::default_random_engine r_eng(std::chrono::steady_clock::now().time_since_epoch().count());
-        std::uniform_int_distribution<unsigned long long> r_dist(0, max);
-        value = r_dist(r_eng);
-    }
-
-    printf("\nGot value \"");
-    {
     std::string s;
     unsigned long long temp = value;
     unsigned char count = 0;
@@ -286,14 +255,64 @@ int main(int argc, char **argv) {
     std::reverse(s.begin(), s.end());
     std::cout << s;
 }
-    printf("\", hit enter to continue...");
+
+int main(int argc, char **argv) {
+    unsigned long long max = 9999999999999;
+    bool isAlt = false;
+    bool reverse = false;
+
+    --argc; ++argv;
+    while(argc > 0) {
+        if(std::strcmp(argv[0], "--help") == 0 || std::strcmp(argv[0], "-h") == 0) {
+            help();
+            return 0;
+        } else if(std::strcmp(argv[0], "--max") == 0 && argc > 1) {
+            --argc; ++argv;
+            max = std::strtoull(argv[0], nullptr, 0);
+        } else if(std::strcmp(argv[0], "-a") == 0 || std::strcmp(argv[0], "--alt") == 0) {
+            isAlt = true;
+        } else if(std::strcmp(argv[0], "-r") == 0 || std::strcmp(argv[0], "--reverse") == 0) {
+            reverse = true;
+        }
+        --argc; ++argv;
+    }
+
+    if(isAlt) {
+        printf("Using alternate Korean numbers, ");
+        if(max > 99) { max = 99; }
+    }
+    printf("Maximum value is set to %llu\n", max);
+
+    unsigned long long value;
+    {
+        std::default_random_engine r_eng(std::chrono::steady_clock::now().time_since_epoch().count());
+        std::uniform_int_distribution<unsigned long long> r_dist(1, max);
+        value = r_dist(r_eng);
+    }
+
+    if(reverse) {
+        auto value_str = isAlt ? value_to_korean_alt(value) : value_to_korean(value);
+        printf("\nGot Korean form \"");
+        std::cout.write((char*)value_str.c_str(), value_str.size());
+        std::cout << "\"";
+    } else {
+        printf("\nGot value \"");
+        printValue(value);
+        printf("\"");
+    }
+    printf(", hit enter to continue...");
 
     std::cin.get();
 
     std::cout << "Result: ";
+    if(reverse) {
+        printValue(value);
+        std::cout << std::endl;
+    } else {
         auto value_str = isAlt ? value_to_korean_alt(value) : value_to_korean(value);
         std::cout.write((char*)value_str.c_str(), value_str.size());
         std::cout << std::endl;
+    }
 
     return 0;
 }