修改了main.cpp中读取输入的小错误

Author: Link14349

mathS/src/lexer.cpp

@@ -16,7 +16,7 @@ void mathS::Lexer::get(mathS::Token& token) {
     switch (token.type){
     case Token::OPERATOR:
         if ((c == '=' || c == '<' || c == '>') && index < content.length()) {
-            if (content[index] == '=' || content[index] == c)
+            if (/*content[index] == '=' || */content[index] == c)
                 token.text += content[index++];
         }
         if (c == '-' && index < content.length()) {
@@ -28,7 +28,7 @@ void mathS::Lexer::get(mathS::Token& token) {
         while (index < content.length()) {
             if (checkType(content[index]) != Token::NUMORSYMB) break;
             token.text += content[index++];
-        } 
+        }
         break;
     case Token::STRING:
         while (index < content.length()) {

mathS/src/main.cpp

@@ -17,23 +17,23 @@ int main() {
 
     /*// Compute测试
     while (true) {
-        std::cin >> str;
+        getline(std::cin, str);
         auto obj = Parse(str);
         while (Compute(obj, obj));
         std::cout << obj->GetString() << std::endl;
     }
     // Rule模块测试
     while (true) {
         std::cout << "Source pattern: ";
-        std::cin >> str;
+        getline(std::cin, str);
         auto srcpattern = Parse(str);
 
         std::cout << "Target pattern: ";
-        std::cin >> str;
+        getline(std::cin, str);
         auto tarpattern = Parse(str);
 
         std::cout << "Object: ";
-        std::cin >> str;
+        getline(std::cin, str);
         auto obj = Parse(str);
 
         auto rule = MakeRule(srcpattern, tarpattern);
@@ -46,7 +46,7 @@ int main() {
 
     // 计算器程序；测试LBAssembler
     while (true) {
-        std::cin >> str;
+        getline(std::cin, str);
         auto mobj = Parse(str);
 
         // 检查表达式是否合法，并输出错误信息