1) State whether the following declarations are valid or invalid. Give reasons for the invalid declarations and draw memory layout for the valid declarations. i. int var = 25; int *ptr = &var; 1i. int var = 30; int* ptr = var; 1ii. int var, *ptr; ptr = &var;

Computer Networking: A Top-Down Approach (7th Edition)
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Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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1) State whether the following declarations are valid or invalid. Give reasons for the invalid
declarations and draw memory layout for the valid declarations.
i. int var = 25;
int *ptr
= &var;
11. int var = 30;
int* ptr = var;
iii. int var, *ptr;
ptr = &var;
iv. float fvar;
int *ptr = &fvar;
v. float fvar, *fptr = &fvar;
vi. int *ptr
= &var;
int var = 25;
vii. double* dptrl, dptr2;
double dvar
25.2;
dptrl
= &dvar;
dptr2
= &dvar;
Transcribed Image Text:1) State whether the following declarations are valid or invalid. Give reasons for the invalid declarations and draw memory layout for the valid declarations. i. int var = 25; int *ptr = &var; 11. int var = 30; int* ptr = var; iii. int var, *ptr; ptr = &var; iv. float fvar; int *ptr = &fvar; v. float fvar, *fptr = &fvar; vi. int *ptr = &var; int var = 25; vii. double* dptrl, dptr2; double dvar 25.2; dptrl = &dvar; dptr2 = &dvar;
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