"string" is an undeclared identifier?

[jeremy_large]

where exactly would i put the string variable:
.h script:

1 // Fill out your copyright notice in the Description page of Project Settings.
2 
3 #pragma once
4 
5 #include "CoreMinimal.h"
6 #include "GameFramework/GameStateBase.h"
7 #include "season.generated.h"
8 
9 /**
10 * 
11 */
12 UCLASS()
13 class NAKED_TOWN_API Aseason : public AGameStateBase
14 {
15 	GENERATED_BODY()
16 	
17 };

I placed:

string season = "summer";

on line 16 and got:

D:\weird games i made\Naked_Town\Source\Naked_Town/Public/season.h(16) : error C3646: 'season': unknown override specifier
 D:\weird games i made\Naked_Town\Source\Naked_Town/Public/season.h(16) : error C2059: syntax error: '='
D:\weird games i made\Naked_Town\Source\Naked_Town/Public/season.h(16) : error C2238: unexpected token(s) preceding ';'