Switch case and matrix input

n = input('number of rows \n ')
for d = (1:n)
Month = {'Mar'}
Days = cell(n,1);
switch Month
    case {'Jan'}
        Days = Total_Days(d,1) +6;
    case {'Feb'}
        Days = Total_Days(d,1) - 24;
    case {'Mar'}
        Days = Total_Days(d,1) - 53;
    case {'Apr'}
        Days = Total_Days(1:end,1) - 84;
    case {'May'}
        Days = Total_Days(1:end,1) - 114;
    case {'Jun'}
        Days = Total_Days(1:end,1) - 145;
    case {'Jul'}
        Days = Total_Days(1:end,1) - 175;
    case {'Aug'}
        Days = Total_Days(1:end,1) - 206;
    case {'Sep'}
        Days = Total_Days(1:end,1) - 237;
    case {'Oct'}
        Days = Total_Days(1:end,1) - 267;
    case {'Nov'}
        Days = Total_Days(1:end,1) - 298;
    case {'Dec'}
        Days = Total_Days(1:end,1) - 328;
    case {'Ja_'}            
        Days = Total_Days(1:end,1) - 359;
        Actual_Year = Actual_Year + 1;
end
end

My code runs with an error shown like this.

SWITCH expression must be a scalar or string constant.

Error in Setting_Date_New (line 33)
switch Month

I need the answer to be in a matrix form that can compute with multiple sets of months at a time.

[FM]

It sure would be helpful if the documentation specified that the switch expression must be a scalar.

[Stephen23]

"It sure would be helpful if the documentation specified that the switch expression must be a scalar."

It does. The SWITCH documentation states "An evaluated switch_expression must be a scalar or character vector. An evaluated case_expression must be a scalar, a character vector, or a cell array of scalars or character vectors."

Answer 1

[the cyclist]

It's not clear to me what you are trying to do, but if you replace

Month = {'Mar'}

with

Month = 'Mar'

you will at least get past your current error.