Wondering why I'm getting the error “use of an undeclared identifier”

Question

   // TODO: Calculate number of years until we reach threshold
   { 
    int years;
    while (ending_size>=starting_size)
    starting_size = starting_size + (starting_size/3) - (starting_size/4);
    years++;
    }
            {// TODO: Print number of years
            printf("Years: %i\n", years);
            }
}

When I run my code, it says "use of undeclared identifier "years", and I think it might be due to the way that I formatted my code. Thanks

Answer 1

It looks like you have { … } around the code where years is declared. I think that's your problem. The { and } limit its scope.