x = 1.5
c = 1;
d=zeros(4)
while c <= 4
    d[c] = ty_round(x);
    c += 1;
    x += 1;
end

┌ Warning: Assignment to `c` in soft scope is ambiguous because a global variable by the same name exists: `c` will be treated as a new local. Disambiguate by using `local c` to suppress this warning or `global c` to assign to the existing global variable.
└ @ Untitled-5.jl:7
┌ Warning: Assignment to `x` in soft scope is ambiguous because a global variable by the same name exists: `x` will be treated as a new local. Disambiguate by using `local x` to suppress this warning or `global x` to assign to the existing global variable.
└ @ Untitled-5.jl:8
ERROR: UndefVarError: `x` not defined
Stacktrace:
 [1] top-level scope
   @ .\Untitled-5.jl:6

x = 1.5
c = 1;
d=zeros(4)
while c <= 4
    global c,x # 声明变量c、x为全局变量
    d[c] = ty_round(x);
    c += 1;
    x += 1;
end

julia> d
4-element Vector{Float64}:
 2.0
 3.0
 4.0
 5.0