Question: C++ PROGRAMMING Given the declaration: int num1, num2; int *ptr1; int *ptr2; double *ptr3; Mark the following the statements as Valid or Invalid. If it

C++ PROGRAMMING

Given the declaration:

int num1, num2;

int *ptr1;

int *ptr2;

double *ptr3;

Mark the following the statements as Valid or Invalid. If it is invalid, explain why

a. ptr1 = &num1;

b. ptr1 = ptr2;

c. ptr3 = ptr2;

d. num1 = ptr1;

e. ptr1 = &ptr2;

f. num1 = *ptr3;

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