Question

need c++ format

1.Check endianness on your system

. Either Big or Little Endian

2.Convert a decimal number to 2’s complement (32bits)

E.g., 5 -> 0000 0000 0000 0000 0000 0000 0000 1001   

here is the start code

*********************************************************
#include <iostream>
using namespace std;

void endianness();
void get_two_complement();
void print_menu();

int main(){
    
    int menu;
   
    do {
        print_menu(); 
        cout<< "Enter a number to select the menu: "; 
        cin >>menu;

        if(menu == 1){
            endianness();
        }
        else if (menu == 2){
            get_two_complement();
        } 
        else if (menu == 0){
            break;
        }   
        else {
           printf("wrong input!!!\n");
        }

        print_menu();
        cout<< "Enter a number to select the menu: "; 
        cin >> menu;
     
    }while (menu !=0);
    cout<< "Bye !!!" << endl;
    exit(0);
}

void endianness(){
    cout << "My system uses the following endianness..." << endl;
    //write the code here
    //print either little or big below




   //end of code  
} 

void get_two_complement(){
    int number;
    cout << "Input the number to convert two's complement: ";
    cin >> number;
    cout << number << "'s two's complement is: "; 
    //write the code here



   
    //end of code 
    cout << endl << "[format]:" << endl;
    cout << number << "'s two's complement is: "; 
    cout << "0000 0000 0000 0000 0000 0000 0000 0000"<< endl;
} 

void print_menu(){

    cout << "********************************" << endl; 
    cout << "****    Homwwork 1: Menu    ****" << endl;
    cout << "*  1. Check endianness         *" << endl;
    cout << "*  2. Convert two's complement *" << endl;
    cout << "*  0. Exit the program         *" << endl;
    cout << "********************************" << endl; 

}

Answer 1

#include <iostream>
using namespace std;

void endianness();
void get_two_complement();
void print_menu();
void convert(int, int[]);

int main(){
  
int menu;

do {
print_menu();
cout<< "Enter a number to select the menu: ";
cin >>menu;

if(menu == 1){
endianness();
}
else if (menu == 2){
get_two_complement();
}
else if (menu == 0){
break;
}   
else {
printf("wrong input!!!\n");
}

}while (menu !=0);
cout<< "Bye !!!" << endl;
exit(0);
}

void endianness(){
cout << "My system uses the following endianness..." << endl;
//write the code here
//print either little or big below
unsigned int i = 1;
char *c = (char*)&i;
if (*c)
cout<<"Little Endian"<<endl;
else
cout<<"Big Endian"<<endl;
//end of code
}

void get_two_complement(){
int number, binary[32], carry;
cout << "Input the number to convert two's complement: ";
cin >> number;
cout << number << " 2's two's complement is: ";
//write the code here
  
//check the number positive or negative
if(number>=0)
{
   convert(number, binary);
   }
   else
   {
       convert(-number, binary);
       //at first 1's complement of the number
       for(int i=0; i<32; i++)
       {
           binary[i] = (binary[i]==0)?1:0;
       }
       //add 1 to the 1's complement of the number
       carry = 1;
       for(int i=31; i>=0; i--)
       {
           int t = binary[i] + carry;
           binary[i] = t % 2;
           carry = t / 2;
           if(carry==0) break;
       }
   }
   //display the number
   for(int i=0; i<32; i++)
   {
       cout<<binary[i];
       if((i+1)%4==0) cout<<" ";
   }
   cout<<endl;
//end of code
}

//function to convert from decimal to binary
void convert(int n, int binary[])
{
   for(int i=31; i>=0; i--)
   {
       if(n==0)
       {
           binary[i] = 0;
           continue;
       }
       binary[i] = n%2;
       n/=2;
   }
}

void print_menu(){

cout << "********************************" << endl;
cout << "**** Homwwork 1: Menu ****" << endl;
cout << "* 1. Check endianness *" << endl;
cout << "* 2. Convert two's complement *" << endl;
cout << "* 0. Exit the program *" << endl;
cout << "********************************" << endl;

}

Output:

********************************
**** Homwwork 1: Menu ****
* 1. Check endianness *
* 2. Convert two's complement *
* 0. Exit the program *
********************************
Enter a number to select the menu: 1
My system uses the following endianness...
Little endian
********************************
**** Homwwork 1: Menu ****
* 1. Check endianness *
* 2. Convert two's complement *
* 0. Exit the program *
********************************
Enter a number to select the menu: 2
Input the number to convert two's complement: -6
-6 2's two's complement is: 1111 1111 1111 1111 1111 1111 1111 1010
********************************
**** Homwwork 1: Menu ****
* 1. Check endianness *
* 2. Convert two's complement *
* 0. Exit the program *
********************************
Enter a number to select the menu: 2
Input the number to convert two's complement: 6
6 2's two's complement is: 0000 0000 0000 0000 0000 0000 0000 0110
********************************
**** Homwwork 1: Menu ****
* 1. Check endianness *
* 2. Convert two's complement *
* 0. Exit the program *
********************************
Enter a number to select the menu: 0
Bye !!!

--------------------------------
Process exited after 30.42 seconds with return value 0
Press any key to continue . . .