C expression for “ 1 w-k 0 k ”: The C expression for “ 1 w-k 0 k ” is shown below. Expression: -1 << k Program: For the above expression “-1 << k”, a complete program has been developed in the below section: //Header file #include <stdio.h> #include <assert.h> //Function definition for part A int partA(int k) { //Returns the value of given expression return -1 << k; } //Main function int main(int argc, char* argv[])

Question

Write a function int Factorial(int n) to calculate factorial of n. If n is non negative then it return factorial, otherwise it display a proper error message and return -1.

Answer 1

Expert Solution & Answer

Chapter 2, Problem 2.81HW

A.

Explanation of Solution

C expression for “1w-k0k”:

The C expression for “1w-k0k” is shown below.

Expression: -1 << k

Program:

For the above expression “-1 << k”, a complete program has been developed in the below section:

//Header file

#include <stdio.h>

#include <assert.h>

//Function definition for part A

int partA(int k)

{

//Returns the value of given expression

return -1 << k;

}

//Main function

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

B.

Explanation of Solution

C expression for “0w-k-j1k0j”:

The C expression for “0w-k-j1k0j” is shown below.

Expression: ~(-1 << k) << j

Program:

For the above expression “~(-1 << k) << j”, a complete program has been developed in the below section:

//Header file

#include <stdio.h>

#include <assert.h>

//Function definition for part A

int partA(int k)

{

//Returns the value of given expression

return -1 << k;

}

//Function definition for part B

int partB(int k, int j)

{

/* Returns the value of given expression by calling function "partA" /

return ~partA(k) << j;

}

//Main function

int main(int argc, char argv[])

{

/* Call function "partB" with checking value using "assert" function */

assert(partB(24, 8) == 0xFFFFFF00);

return 0;

}

The given code is used to return the value of expression “~(-1 << k) << j”

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