Clear Filters
Clear Filters

The numbers do not appear in standard format despite the writing (format shortG)

4 views (last 30 days)
format shortG
Mf=6.480554950317725e+03;
Cp_sea=3.976;
t_out=100;
t_in=25;
Qu=Mf*Cp_sea*(t_out-t_in); %useful heat gain (kw)
fprintf('useful heat gain = %dKw\n\n',Qu)
_________
In the previous code, the value of Mf was calculated by an equation and the output was as it appeared despite writing (format shortG) in the first line of the code, and then when adding the (fprintf) command, the output also appears in the long Formula e+3, so how do I overcome this problem

Answers (3)

Dyuman Joshi
Dyuman Joshi on 19 Mar 2023
Using format is only applicable to numeric outputs.
Change the formatting operator in fprintf to obtain the proper value -
format shortG
Mf=6.480554950317725e+03;
Cp_sea=3.976;
t_out=100;
t_in=25;
Qu=Mf*Cp_sea*(t_out-t_in) %useful heat gain (kw)
Qu =
1.9325e+06
fprintf('useful heat gain = %g Kw\n\n',Qu)
useful heat gain = 1.9325e+06 Kw

VBBV
VBBV on 19 Mar 2023
Use %f format specifier
format shortG
Mf=6.480554950317725e+03
Mf =
6480.6
Cp_sea=3.976;
t_out=100;
t_in=25;
Qu=Mf*Cp_sea*(t_out-t_in); %useful heat gain (kw)
fprintf('useful heat gain = %.2f kW\n\n',Qu) % use %f
useful heat gain = 1932501.49 kW
  1 Comment
VBBV
VBBV on 19 Mar 2023
Try forcing the computed variable using vpa
format shortG
Mf=6.480554950317725e+03
Mf =
6480.6
Cp_sea=3.976;
t_out=100;
t_in=25;
% syms Cp_sea t_out t_in
Qu = vpa(Mf*Cp_sea*(t_out-t_in),8) % somehow
Qu = 
1932501.5
% Qu=vpa(subs(Mf*Cp_sea*(t_out-t_in),{Cp_sea,t_out,t_in},{3.976,100,25}),7) %useful heat gain (kw)
fprintf('useful heat gain = %.2f kW\n\n',Qu) % use %f
useful heat gain = 1932501.49 kW

Sign in to comment.


Star Strider
Star Strider on 19 Mar 2023
One option is to use string arrays —
format shortG
Mf=6.480554950317725e+03;
Cp_sea=3.976;
t_out=100;
t_in=25;
Qu=Mf*Cp_sea*(t_out-t_in); %useful heat gain (kw)
fprintf("useful heat gain = " + Qu + " Kw\n\n")
useful heat gain = 1932501.4862 Kw
.

Categories

Find more on General Applications in Help Center and File Exchange

Products


Release

R2022b

Community Treasure Hunt

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

Start Hunting!