How to add numbers in the string


#1

i am getting an error that numbers in strings can’t be added eg: 5+2= error please help me ,
thank you :relaxed::relaxed:


#2

Show the blocks you are using please.


#3


#4


#5

I guess you have two accounts on this forum?


#6

by mistake i have made two accounts please tell me sir how to do it.,
your most welcome .:slightly_smiling_face:


#7

the socket “valueIfTagNotThere” should be a numeric 0 block…
it does not work too good to add an empty text block to something, does it?
Taifun


#8

thank you so much , it worked :blush::blush::blush:
can you please tell me how to take that data and put it in the form of graph on next page.,
Thank you so much again…:grinning:


#9

How to pass values from one screen to another screen by Scott

see also tip 1

Taifun


Check out the Thunkable YouTube channel, there are lots of great videos for getting started:
https://www.youtube.com/channel/UCTVZRyybOCDBL2zLXSeQVsw


A very good way to learn App Inventor is to read the free Inventor’s Manual here in the AI2 free online eBook http://www.appinventor.org/book2 … the links are at the bottom of the Web page. The book ‘teaches’ users how to program with AI2 blocks.
There is a free programming course here http://www.appinventor.org/content/CourseInABox/Intro and the aia files for the projects in the book are here: http://www.appinventor.org/bookFiles
How to do a lot of basic things with App Inventor are described here: http://www.appinventor.org/content/howDoYou/eventHandling .

Also do the tutorials http://appinventor.mit.edu/explore/ai2/tutorials.html to learn the basics of App Inventor, then try something and follow the Top 5 Tips: How to learn App Inventor


#10

thanks again.:slightly_smiling_face: