Invalid escape sequence appears in format string. See help sprintf for valid escape sequences

I have the following set of fprintf statements.
magnaxialA=(Elem(i).Q(1,1)/1000);
magnshearA=(Elem(i).Q(2,1))/1000;
magnmomentA=(Elem(i).Q(3,1))/1000;
fprintf('\n\tStart Node\n')
fprintf('\Axial Force %f kN\n',abs(magnaxialA))
fprintf('\Shear Force %f kN\n',abs(magnshearA))
fprintf('\Moment %f kN-m\n',abs(magnmomentA))
But I keep getting the error message Invalid escape sequence appears in format string. See help sprintf for valid escape sequences

 采纳的回答

Get rid of the first backslash since \A, \S, and \M are invalid.
fprintf('\n\tStart Node\n')
fprintf('Axial Force %f kN\n',abs(magnaxialA))
fprintf('Shear Force %f kN\n',abs(magnshearA))
fprintf('Moment %f kN-m\n',abs(magnmomentA))

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