Q35,paper 3,J 13 Which of the following is/are the fundamental semantic model(s) of parameter passing ?

(A) in mode

(B) out mode

(C) in-out mode

(D) all of the above

Answer D.

Explanation.

void write(int f)

{

//

}

void main()

{

int a = 3;

write (a);

}

We call a  as actual parameter and f as formal parameter.

Fundamental semantics model of parameter passing.

in -mode: Formal Parameters can receive data from Actual Parameter

• out-mode: Formal Parameter can transmit data to Actual Parameter

• inout-mode: Do both.

Conceptual Model of Data Transfer

• Transmission of actual value (copy)

• Transmission of access path (alias)