Array of Strings

jabramson · June 2012

Is it possible to do an array with strings (or characters) in it?

I'd like to reference this by array index

cINPUTNAMES[] = {'INPUT #1', 'INPUT #2', 'INPUT #3', 'INPUT #4', 'INPUT #5', 'INPUT #6', 'INPUT #7', 'INPUT #8', 'INPUT #9', 'INPUT #10', 'INPUT #11', 'INPUT #12', 'INPUT #13', 'INPUT #14', 'INPUT #15', 'INPUT #16', 'INPUT #17', 'INPUT #18', 'INPUT #19', 'INPUT #20', 'INPUT #21', 'INPUT #22', 'INPUT #23', 'INPUT #24', 'INPUT #25', 'INPUT #26', 'INPUT #27', 'INPUT #28', 'INPUT #29', 'INPUT #30', 'INPUT #31', 'INPUT #32' }

mpullin · June 2012

You were pretty close. You just have to put an extra [] in there, i.e. VOLATILE CHAR cINPUTNAMES[32][10]

A string is an array of chars. What you are declaring is an array of arrays of chars. What I wrote above describes an array of 32 strings and each one contains at most 10 chars.
cINPUTNAMES[2] -> 'INPUT #2'
cINPUTNAMES[2][8] -> '2'

I'm assuming this was an academic example and you are going to be storing more interesting strings than 'INPUT #2' - otherwise you could just use itoa and forgo the array altogether

Hedberg · June 2012

In my experience, declaring 2d character arrays is a bit tricky. The following seem to work:

char sSTR[][3] = {'abc','def'}
char sSTR2[][] = { {'a','b','c'}, {'d','e','f'} }

while this does not:

char sSTR3[][] = {'abc','def'}

Joe Hebert · June 2012

jabramson wrote: »

Is it possible to do an array with strings (or characters) in it?

Yes - Here's an example:

CHAR cTransportMap[19][6]	= {

   {'PLAY'}, 	//1 
   {'STOP'}, 	//2 
   {'PAUSE'}, 	//3 
   {'SKIP+'}, 	//4 
   {'SKIP-'}, 	//5 
   {'SCAN+'}, 	//6 
   {'SCAN-'}, 	//7 
   {'RECORD'}, 	//8 
   {'POWER'}, 	//9 
   {'NUM0'}, 	//10 
   {'NUM1'}, 	//11
   {'NUM2'}, 	//12
   {'NUM3'}, 	//13
   {'NUM4'}, 	//14
   {'NUM5'}, 	//15 
   {'NUM6'}, 	//16
   {'NUM7'}, 	//17
   {'NUM8'}, 	//18
   {'NUM9'} 	//19
                  
}

travis · June 2012

Hedberg wrote: »
while this does not:
char sSTR3[][] = {'abc','def'}

char sSTR3[][3] = { 
  {'abc'},{def'}
}

vining · June 2012

travis wrote: »

char sSTR3[][3] = { 
  {'abc'},{def'}
}

I beleive the earlier post just eluded to the fact that the second array needs to be defined.

[] [] won't work
but
[] [3] will

When dealing with 2 or more arrays the last array needs to be defined with a number in the brackets not just the array itself.

Array of Strings

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