…ALL DIFFERENCES…. primary & secondary storage unit [2015] > system & application software [2014,2006,2004,2003] compiler & interpreter [2011] RAM & ROM [2007,2011,2009] RAM & Register [2014] > Keywords and identifier [2008,2004] > structure & union [ 2015,2014,2007,2006,2005] > structure & class [2013] > structure & array [2004] printf and fprintf [2015, 2013] malloc() and calloc() [2011] > gets() and puts() [2015] > getch & getchar [2013] > feof & ferror [2013] Library & user-defined function [2011,2008] Call by reference & call by value [2011,2007 Actual argument & formal argument [2015, 2013,2011,2007] Also known as differerence between actual and fomal parameters: > global and local variables [2013,2006,2007] > Automatic and static variables [2013] array & ordinary variable [2015, 2013,2005,2003] > arrays & pointers [2011] array & string [2004] array & structure [2004] > do-while & while [2011,2014] while & for [2011] > break & continue [2011,2006,2016] > break & go-to statement [2008] > switch and if statement [2008, 2015, 2005,2009]