graph values of pressure coefficient as a function of x/c in matlab

To graph values of pressure coefficient as a function of x/c, you can use the plot function in Matlab. Here's an example code:

main.m
% input values of x/c and corresponding pressure coefficients Cp
x_c = [0.0, 0.1, 0.2, 0.3, 0.4];
Cp = [-0.6, -0.4, -0.2, -0.1, 0.0];

% plot Cp vs x/c
plot(x_c, Cp)

% set axis labels and title
xlabel('x/c')
ylabel('Pressure coefficient (Cp)')
title('Cp vs x/c')
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In this code, x_c is an array of values of x/c (where x is the distance along the chord of an airfoil and c is the chord length), and Cp is an array of corresponding values of pressure coefficient (a dimensionless parameter used in fluid dynamics to describe the pressure distribution along the surface of an airfoil).

The plot function is used to plot Cp as a function of x_c. The resulting plot should show the trend of the pressure coefficient distribution along the airfoil surface.

Note that this code assumes that the Cp data is ordered from x/c = 0 to x/c = 1 (i.e., the airfoil is normalized such that its chord length is 1). If your data is ordered differently, you might need to modify the x_c array accordingly.