Computer Systems: A Programmer's Perspective (3rd Edition)
Computer Systems: A Programmer's Perspective (3rd Edition)
3rd Edition
ISBN: 9780134092669
Author: Bryant, Randal E. Bryant, David R. O'Hallaron, David R., Randal E.; O'Hallaron, Bryant/O'hallaron
Publisher: PEARSON
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Chapter 2, Problem 2.57HW

Explanation of Solution

Corresponding modified code for “show_bytes”:

#include <stdio.h>

//Define variable "byte_pointer" in char datatype.

typedef unsigned char* byte_pointer;

//Function definition for show_bytes.

void show_bytes(byte_pointer start, size_t len)

{

  //Declare variable "i" in int data type.

  int i;

/* "For" loop to determine byte representation in hexadecimal */

  for (i = 0; i < len; i++)

    //Display each bytes in "2" digits hexadecimal value.

    printf(" %.2x", start[i]);

  printf("\n");

}

//Function to determine byte for "int" data type value.

void show_int(int x)

{

  //Call show_bytes function with integer value.

  show_bytes((byte_pointer) &x, sizeof(int));

}

//Function to determine byte for "float" data type value.

void show_float(float x)

{

  //Call show_bytes function float value.

  show_bytes((byte_pointer) &x, sizeof(float));

}

//Function to determine byte for "pointer" value.

void show_pointer(void *x)

{

  //Call show_bytes function with pointer value.

  show_bytes((byte_pointer) &x, sizeof(void *));

}

//Function to determine byte for "short" data type value.

void show_short(short x)

{

//Call show_bytes function with short int value.

  show_bytes((byte_pointer) &x, sizeof(short));

}

//Function to determine byte for "long" data type value.

void show_long(long x)

{

//Call show_bytes function with long value.

  show_bytes((byte_pointer) &x, sizeof(long));

}

//Function to determine byte for "double" data type value.

void show_double(double x)

{

//Call show_bytes function with double value.

  show_bytes((byte_pointer) &x, sizeof(double));

}

//Test all show bytes.

void test_show_bytes(int val)

{

  //Define variables.

  int ival = val;

  float fval = (float) ival;

  int *pval = &ival;

  //Call function.

  show_int(ival);

  show_float(fval);

  show_pointer(pval);

//Define variables.

short sval = (short) ival;

long lval = (long) ival;

double dval = (double) ival;

//Call function.

    show_short(sval);

    show_long(lval);

    show_double(dval);

}

//Main function.

int main(int argc, char* argv[])

{

  //Define the sample value.

  int sampleValue = 1024;

  //Call test_show_bytes function.

  test_show_bytes(sampleValue);

  return 0;

}

The given program is used to display the byte representation of different program objects by using casting...

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Chapter 2 Solutions

Computer Systems: A Programmer's Perspective (3rd Edition)

Ch. 2.1 - Prob. 2.11PPCh. 2.1 - Prob. 2.12PPCh. 2.1 - Prob. 2.13PPCh. 2.1 - Prob. 2.14PPCh. 2.1 - Prob. 2.15PPCh. 2.1 - Prob. 2.16PPCh. 2.2 - Prob. 2.17PPCh. 2.2 - Practice Problem 2.18 (solution page 149) In...Ch. 2.2 - Prob. 2.19PPCh. 2.2 - Prob. 2.20PPCh. 2.2 - Prob. 2.21PPCh. 2.2 - Prob. 2.22PPCh. 2.2 - Prob. 2.23PPCh. 2.2 - Prob. 2.24PPCh. 2.2 - Prob. 2.25PPCh. 2.2 - Practice Problem 2.26 (solution page 151) You are...Ch. 2.3 - Prob. 2.27PPCh. 2.3 - Prob. 2.28PPCh. 2.3 - Prob. 2.29PPCh. 2.3 - Practice Problem 2.30 (solution page 153) Write a...Ch. 2.3 - Prob. 2.31PPCh. 2.3 - Practice Problem 2.32 (solution page 153) You are...Ch. 2.3 - Prob. 2.33PPCh. 2.3 - Prob. 2.34PPCh. 2.3 - Practice Problem 2.35 (solution page 154) You are...Ch. 2.3 - Prob. 2.36PPCh. 2.3 - Practice Problem 2.37 solution page 155 You are...Ch. 2.3 - Prob. 2.38PPCh. 2.3 - Prob. 2.39PPCh. 2.3 - Practice Problem 2.40 (solution page 156) For each...Ch. 2.3 - Prob. 2.41PPCh. 2.3 - Practice Problem 2.42 (solution page 156) Write a...Ch. 2.3 - Practice Problem 2.43 (solution page 157) In the...Ch. 2.3 - Prob. 2.44PPCh. 2.4 - Prob. 2.45PPCh. 2.4 - Prob. 2.46PPCh. 2.4 - Prob. 2.47PPCh. 2.4 - Prob. 2.48PPCh. 2.4 - Prob. 2.49PPCh. 2.4 - Prob. 2.50PPCh. 2.4 - Prob. 2.51PPCh. 2.4 - Prob. 2.52PPCh. 2.4 - Practice Problem 2.53 (solution page 160) Fill in...Ch. 2.4 - Practice Problem 2.54 (solution page 160) Assume...Ch. 2 - Compile and run the sample code that uses...Ch. 2 - Try running the code for show_bytes for different...Ch. 2 - Prob. 2.57HWCh. 2 - Write a procedure is_little_endian that will...Ch. 2 - Prob. 2.59HWCh. 2 - Prob. 2.60HWCh. 2 - Prob. 2.61HWCh. 2 - Write a function int_shifts_are_arithmetic() that...Ch. 2 - Fill in code for the following C functions....Ch. 2 - Write code to implement the following function: /...Ch. 2 - Write code to implement the following function: /...Ch. 2 - Write code to implement the following function: / ...Ch. 2 - You are given the task of writing a procedure...Ch. 2 - Prob. 2.68HWCh. 2 - Write code for a function with the following...Ch. 2 - Write code for the function with the following...Ch. 2 - You just started working for a company that is...Ch. 2 - You are given the task of writing a function that...Ch. 2 - Write code for a function with the following...Ch. 2 - Write a function with the following prototype: /...Ch. 2 - Prob. 2.75HWCh. 2 - The library function calloc has the following...Ch. 2 - Prob. 2.77HWCh. 2 - Write code for a function with the following...Ch. 2 - Prob. 2.79HWCh. 2 - Write code for a function threefourths that, for...Ch. 2 - Prob. 2.81HWCh. 2 - Prob. 2.82HWCh. 2 - Prob. 2.83HWCh. 2 - Prob. 2.84HWCh. 2 - Prob. 2.85HWCh. 2 - Intel-compatible processors also support an...Ch. 2 - Prob. 2.87HWCh. 2 - Prob. 2.88HWCh. 2 - We are running programs on a machine where values...Ch. 2 - You have been assigned the task of writing a C...Ch. 2 - Prob. 2.91HWCh. 2 - Prob. 2.92HWCh. 2 - following the bit-level floating-point coding...Ch. 2 - Following the bit-level floating-point coding...Ch. 2 - Following the bit-level floating-point coding...Ch. 2 - Following the bit-level floating-point coding...Ch. 2 - Prob. 2.97HW
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