error: 'doTest' was not declared in this scope

hi - trying figure out how call functions have been defined in code brought in through #include. imagine has come lot, sorry- did searches on forum couldn't find relevant.

for learning purposes i've created test sketch, test.c , test.h files. how call function in test.c ('dotest()'). , matter, how variables within included files made available within sketch?

finally (!) better/different use tab each .c + .h file? piece looking for? simple test code below.

thanks tips - real stumper me.
---roy

code: [select]

#include <test.h>

void setup(){
 //do set up
}

void loop(){
 dotest();
}


--test.h

code: [select]

#ifndef _test_h
#define _test_h

#include <inttypes.h>
//define stuff
#endif


--test.c

code: [select]

void dotest() {
 //do stuff
}

where's file located?

test.c need #include "test.h"

main sketch may need #include "test.h"

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