# it won't run as it keeps showing illegal use of the word else

3 ビュー (過去 30 日間)
Eti Rastogi 2020 年 9 月 14 日

tank_diameter = 4.1; % Diameter of the tank [meters]
total_tank_length = 20.5; % total length of the tank [meters]
fluid_height_increment = 0.25; % increments for fluid height [meters]
safety_percent = 0.8; % safety percent [decimal]
%% ____________________
%% CALCULATIONS
Length_cylindrical_section = (total_tank_length - (2*tank_radius)); % finding length of cylindrical section
% using variables A, B and C to calculate the total tank volume
A = ((pi*(tank_diameter)^2) *((3*tank_radius) - tank_diameter)/3);
tank_volume = A+Length_cylindrical_section*(B-C);
% using fluid heights to find total volume tolerance
v_tol = (tank_volume * (fluid_height1)) - (tank_volume * (fluid_height2));
for fluid_height = 0
A = ((pi*(fluid_height)^2) *((3*tank_radius) - fluid_height)/3);
fluid_volume = A+Length_cylindrical_section*(B-C);
v_tol = (fluid_volume * (fluid_height1)) - (fluid_volume * (fluid_height2));
Number_loops =0;
while fluid_volume <= (tank_volume - v_tol )
Fluid_height = fluid_height + fluid_height_increment;
Number_loops = Number_loops +1;
else Number_loops = Number_loops +1;
fprintf('The final fluid volume is %.2f m^3. /n' , fluid_volume);
end
disp('The number of iterations are %.0f' , Number_loops);
disp('The safe fill volume is %.2f m^3.' , v_tol);
disp('The final fluid volume is %.2f m^3.' , fluid_volume);
plot (fluid_volume ,fluid_height);
xlabel = 'Fluid Height [m]';
ylabel = 'Fluid Volume [m^3]' ;
title = ' Fluid Volume vs Fluid Height';
end

#### 3 件のコメント

Ruger28 2020 年 9 月 14 日
You have a "WHILE" and an "ELSE" in a "FOR" loop with no "IF" anywhere to be found. Your syntax is wrong.
Rik 2020 年 9 月 14 日
Eti Rastogi 2020 年 9 月 14 日
sorry about that and thank u

サインインしてコメントする。

### 回答 (1 件)

Ayush Gupta 2020 年 9 月 17 日
The problem here is with the syntax of while loop, where else is being used inside while loop without using if first. Read about the documentation of while loop and how to use it, here. Refer to the following code on the changes to make:
while fluid_volume <= (tank_volume - v_tol )
Fluid_height = fluid_height + fluid_height_increment;
Number_loops = Number_loops +1;
%else Number_loops = Number_loops +1;
%fprintf('The final fluid volume is %.2f m^3. /n' , fluid_volume);
end

サインインしてコメントする。

### Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by