How do you write a program that asks a user to enter a list of integers placing positive and negative integers into separate arrays and output both arrays?

Answer 1

#include

#include

#include

#include

using namespace std;

string ask(string prompt)

{

string input;

cout<

getline(cin, input);

return(input);

}

int ask_for_int()

{

int input;

string response = ask("Enter a number: ");

stringstream s(response);

if(s>>input)

return(input);

return(0);

}

bool ask_yn(std::string prompt)

{

while(1)

{

string input = ask(prompt);

if( input.size() && input.size()<4 )

{

if((input[0]=='y' input[0]=='Y')

&& (input.size()==1

(input.size()==3

&& (input[1]=='e' input[1]=='E')

&& (input[2]=='s' input[2]=='S'))))

return(true);

if(( input[0]=='n' input[0]=='N')

&& (input.size()==1

(input.size()==2

&& (input[1]=='o' input[1]=='O'))))

return(false);

}

cout<<"Please answer YES or NO\n"<

}

}

void print_array(string title, vector arr)

{

cout<

if(!arr.size())

cout<<"None"<

else for(size_t i=0; i

cout<

cout<

}

int main()

{

vector positive;

vector negative;

while(1)

{

int i = ask_for_int();

if( !i && !ask_yn("Invalid number. Continue entering numbers? "))

break;

if( i>0 )

positive.push_back(i);

else

negative.push_back(i);

}

cout<

print_array("Positive integers",positive);

print_array("Negative integers",negative);

}

Example Output

Enter a number: 42

Enter a number: -12

Enter a number: -1

Enter a number: 2112

Enter a number: 6

Enter a number: -23

Enter a number: +1

Enter a number: -990

Enter a number: 112

Enter a number: 0

Invalid number. Continue entering numbers? no

Positive integers

42

2112

6

1

112

Negative integers

-12

-1

-23

-990