adding RandomForStatement and fixing typo

src/AST/ForStatement.cpp

@@ -25,6 +25,6 @@ Expression* ForStatement::getStep() {
 	return step_;
 }
 
-Statement* ForStatement::GetStmt() {
+Statement* ForStatement::getStmt() {
 	return stmt_;
 }

src/AST/RandomForStatement.cpp

@@ -0,0 +1,32 @@
+#include "AST/RandomForStatement.h"
+#include "AST/ASTVisitor.h"
+
+RandomForStatement::RandomForStatement(Expression *init, Expression *prob, Expression *step, Statement *stmt) : init_(init),prob_(prob),step_(step),stmt_(stmt)
+{
+	//
+}
+
+RandomForStatement::~RandomForStatement() {
+	//
+}
+
+void RandomForStatement::accept(ASTVisitor *visitor) {
+	visitor->visit(this);
+}
+
+Expression* RandomForStatement::getInit() {
+	return init_;
+}
+
+Expression* RandomForStatement::getProb() {
+	return prob_;
+}
+
+Expression* RandomForStatement::getStep() {
+	return step_;
+}
+
+Statement* RandomForStatement::getStmt() {
+	return stmt_;
+}
+