Strange Response

I was debugging my program and came across a strange error:

Here is the code:

fflush(stdin);
display_convert_from();
gets(DataStore_userinput);
printf("datastoreuserinput is %d", DataStore_userinput); getchar(); getchar();

The print statement is to verify that I'm getting the correct number back.

The problem is I enter the number "3", but the printf statement comes back as
"datastoreuserinput is -62".

-62?

I have no idea how that happened.

Does anyone know why this is happening and how to resolve this?

Thanks.