Error using fprintf , not defined for cell inputs

I have a trivial bug that has me stumped.

t=[0:30]; 

%Infection
I=0.05*exp(-t); 
%Loosening
L=0.01*exp(0.15*t);
%Fracture
F=0.01*exp(0.01*t);
%Wear 
W=0.01*exp(0.1*t);
%Surgical Error 
SE=0.001;
%Pain
P=0.005; 

B={'Infection', 'Looseness',' Fracture', 'Wear', 'Surgical Error', 'Pain'};

A= B(1), B(4);
    I(15),W(15);
    I(30),W(30);
  B(2), B(5);
    L(15),SE;
    L(30),SE;
 B(3), B(6);
    F(15),P; 
    F(30),P; 

fS='Probability of Failure for %s is %4.2e after 15 years and %4.2e after 30 years\n';
fprintf(fS,A)

----

This results in ...

??? Error using ==> fprintf
Function is not defined for 'cell' inputs.

Error in ==> HW1 at 61
fprintf(fS,A)

My intent is to have something like :

Probability of Failure for _'Infection/looseness/etc...'_ is _'### for each category'_ after 15 years and _'### for each category'_ after 30 years\n'

----

I attempted fprintf(fS,A{:}), but when I do this the text do not display properly and it does not display the entire matrix

Thank you for any help on this

Answer 1

[Walter Roberson]

The code you give assigns only B(1) to A. The B(4), I(15), W(15) and so on, will either be displayed to the user or simply discarded.

Perhaps you want

A= { B{1}, B{4}; ...
     I(15), W(15); ...
     I(30), W(30); ...
     B{2}, B{5}; ...
     L(15), SE; ...
     L(30), SE; ...
     B{3}, B{6}; ...
     F(15), P; ...
     F(30), P };

Note that I changed B(1) to B{1}

Answer 2

[Dishant Arora]

t=[0:30];
%Infection 
I=0.05*exp(-t); 
%Loosening
L=0.01*exp(0.15*t); 
%Fracture
F=0.01*exp(0.01*t); 
%Wear 
W=0.01*exp(0.1*t); 
%Surgical Error 
SE=0.001; 
%Pain
P=0.005;
B={'Infection', 'Looseness',' Fracture',...
  'Wear', 'Surgical Error', 'Pain'};
A=[I(15),I(30);L(15),L(30);F(15),F(30);W(15),W(30);SE,SE;P, P];
fS='Probability of Failure for %s%s%s%s%s%s is %4.2e%4.2e%4.2e%4.2e%4.2e%4.2e after 15 years and %4.2e%4.2e%4.2e%4.2e%4.2e%4.2e after 30 years\n'; 
fprintf(fS,B{1},B{2},B{3},B{4},B{5},B{6},A(:))