Explain the difference between call by value and call by reference in

Explain the difference between call by value and call by reference in C language?

Answer»

S.no	Call By Value	Call By Reference
1.	Passing variable VALUES when calling a function is CALLED Call By Values	Passing variable location when calling a function is called Call By Reference
2.	Values of calling function variable to get COPIED into dummy variables	Address of actual variables get copied into the dummy variables
3.	Changes have no IMPACT on values of actual variables	Changes can MANIPULATE real variables
4.	Cannot alter the values of actual variables	Possible to alter the values of variables