variables - The params of c++ function -

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• what differences between pointer variable , reference variable in c++? 30 answers

the c function param such :

void test(int fp, int &pos){ //do something... } 

but don't understand "int &pos" meant .
thank help

it means pos made reference variable variable being passed during function call(their address becomes same).ie, change in pos reflects in calling variable.for example :

if function call

  test(f,p); 

changes made pos reflect in p.