Question

In: Computer Science

Correct mistakes in the following program: /* BUG ZONE!!! Example: some common pointer errors */ #include...

Correct mistakes in the following program:

/* BUG ZONE!!!

Example: some common pointer errors */

#include <stdio.h>

main()

{

int i = 57;

float ztran4;

int track[] = {1, 2, 3, 4, 5, 6}, stick[2][2];

int *nsave;

/* Let's try using *nsave as an int variable, and set it to 38 */

*nsave = 38; /* BUG */

nsave = NULL;

*nsave = 38; /* BUG */

nsave = 38; /* BUG */

&nsave = 38; /* BUG */

nsave = &i;

*nsave = 38;

nsave = &ztran4; /* BUG */

nsave = track; /* nsave points at track[0] */

/* Increase track[0] by 1: */

*nsave++; /* BUG */

/* Now point at stick: */

nsave = stick; /* BUG */

nsave = &stick; /* BUG */

nsave = stick[0][0]; /* BUG */

nsave = *stick;

nsave = **stick; /* BUG */

nsave = stick[0];

nsave = &stick[0][0];

nsave = &**stick;

}

Solutions

Expert Solution

#include <stdio.h>

main()

{

int i = 57;

float ztran4;

int track[] = {1, 2, 3, 4, 5, 6}, stick[2][2];

int *nsave;

int q = 38; /*For assigning 38 to variable otherwise it would corrupt other data structures in the program and get errors instead*/

/* Let's try using *nsave as an int variable, and set it to 38 */

nsave = &q; /* BUG */

nsave = NULL;

nsave = &q /* BUG */

nsave = &q; /* BUG */

nsave = &q; /* BUG */

nsave = &i;

*nsave = 38;

void * v= &nsave; /*For assigning different data type pointer*/

v = &ztran4; /* BUG */

nsave = track; /* nsave points at track[0] */

/* Increase track[0] by 1: */

nsave++; /* BUG */

/* Now point at stick: */

int (*nsave)[2] = stick; /* BUG */

int (*nsave)[2] = stick; /* BUG */

int (*nsave)[2] = stick; /* BUG */

nsave = *stick;

nsave = *stick; /* BUG */

nsave = stick[0];

nsave = &stick[0][0];

nsave = &**stick;

}

Hope this helps you. Please give an upvote. Thank you.

venereology answered 4 months ago
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