Question

C++

Give me an example of how you could use an if statement. The example should include a summary (Algorithm) of the program, and how you would use the if statement. I am including an example aswell.

For example, suppose you had a program to determine if a number is positive, negative or zero. Read in a number and then use the if statement to determine if the number is positive (>0) or negative (<0) or zero (==0):

if (x>0)
//display positive message
else if (x<0)
   //display negative message
else
//display zero message

Answer 1

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

int main(){
    int x;
    cout<<"Enter an integer: ";
    cin>>x;
    if (x>0)
        //display positive message
        cout<<x<<" is positive"<<endl;
    else if (x<0)
        //display negative message
        cout<<x<<" is negative"<<endl;
    else
        //display zero message
        cout<<x<<" is zero"<<endl;
    return 0;
}