@echo off
:menu
cls
color 0a
title quiz
echo Hello, welcome to Quiz, a place to improve ur knowledge. choose what u want to do.
echo 1) start game
echo 2) credits
echo 3) quit

set /p answer=
if %answer% == 1 goto start 
if %answer% == 2 goto credits
if %answer% == 3 goto quit
if %answer% neq 1 goto error
if %answer% neq 2 goto error
if %answer% neq 3 goto error
:credits
echo thank u for playing! credits go to larry zhang
echo continue? (y/n)

set /p answer=
if %answer% == y goto start
if %answer% == n goto menu

:quit
cls
echo we hope u enjoyed! bye for now
pause
exit

:start
cls
echo are u ready
echo.
pause
cls
color 09
echo lets start
echo.
pause

@echo off
title my game
color 03
echo what is ur name ?
set /p name=
echo hello %name%,my name is larry
echo.
pause

:first question
cls
echo what is 23+45? answer or type e to exit
echo 1) 67
echo 2) 68
echo 3) 69

set /p answer=
if %answer% == 2 goto second question
if %answer% == e goto menu
if %answer% neq 2 goto wrong message
if %answer% neq e goto wrong message

:second question
cls
echo what is 64-37? answer or type e to exit
echo 1) 26
echo 2)24
echo 3)27

set /p answer=
if %answer% == 3 goto third question
if %answer% == e goto menu
if %answer% neq 3 goto wrong message
if %answer% neq e goto wrong message

:third question
cls
echo what is 5x43? answer or type e to exit
echo 1) 205
echo 2) 215
echo 3) 225

set /p answer=
if %answer% == 2 goto fourth question
if %answer% == e goto menu
if %answer% neq 2 goto wrong message
if %answer% neq e goto wrong message

:fourth question
cls
echo what is 64/8? answer or type e to exit
echo 1) 1
echo 2) 24
echo 3) 8

set /p answer=
if %answer% == 3 goto bonus question
if %answer% == e goto menu
if %answer% neq 3 goto wrong message
if %answer% neq e goto wrong message

:bonus question
cls
echo let pi be 3.14, what is the area of a circle with 10 cm radius? answer or type e to exit

set /p answer=
if %answer% == 314 goto congratulations
if %answer% == e goto menu
if %answer% neq 314 goto wrong message
if %answer% neq e goto wrong message

:wrong message
cls
echo unfortunately u got that one wrong. continue? (y/n)
set /p input=
if %input% equ y goto start
if %input% equ n goto menu
if %input% neq y goto error
if %input% neq n goto error

:congratulations
cls
echo Well Done u did it!
echo continue? (y, n)
set /p input=
if %input% equ y goto start
if %input% equ n goto menu
if %input% neq y goto error
if %input% neq n goto error

:error
cls
echo i dont know what u mean, continue? (y/n)
set /p input=
if %input% equ y goto start
if %input% equ n goto menu
if %input% neq y goto error
if %input% neq n goto error