Question

4. Consider the following declarations: I. const int* x I. const int const x II. int const x; IV. int x V. int x Match declarations I-V with the following: (a) the integer it points to can change in value. A pointer to an integer that can never change the address it points to, but (b) A pointer to a pointer to an integer A pointer whose address can never change, and whose integer value that (c) it points to cannot change either. A pointer to an integer whose value can never change, but the address that (d) the pointer points to can.

Answer 1

Solution

//A
passing parameters by value in which any change in parameter only vaild inside the function. Outdside the function no change variable value

//B //C
passing parameters by reference in which any change in parameter change the variable value at memory level and also vaild to outside the function.

[A] No_A Yes_B Yes_C
[B] No_A Yes_B No_C
[C] Yes_A No_B No_C

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>Share Lh Result Execute main.cpp STDIN #include <iostream> -o main.cpp Sg++ 2 Smain 3 using namespace std; 1 4 2 5 int fun1(int x){ x = 2; 2 6 7 9- int fun2(int &x){ x = 2; 10 11 12 13 int fun3( int* x){ *x = 2; } 14 15 16 17 18 int main) 19 20- int x-1; int *p; 21 22 p-&x; 23 24 fun1(x); printf("%d\n", x) ; 25 26 27 28 x-1; fun2(x); printf("%d\n",x) ; 29 30 31 32 x-1; fun3(p); printf("%d\n" , x); 33 34 35