Reading string within a string

Hello,

Is it possible to do the following:

a='userinput' % string

b={'problem.a', 'problem1.a'.....'problemn.a'}

% fuction/conversion? convertStringsToChars doesnt recognize .a as string!!

I want it to be read as b={'problem.userinput'.....'problemn.userinput'}

Thanks,

Jinang

Answer 1

[David Hill]

b={sprintf('problem.%s',a),sprintf('problem1.%s',a)};