Else-If Statement Examples in C++

Description

An if statement can be followed by an optional else if...else statement, which is very usefull to test various conditions using single if...else if statement.When using if , else if , else statements there are few points to keep in mind.

  • An if can have zero or one else's and it must come after any else if's.
  • An if can have zero to many else if's and they must come before the else.
  • Once an else if succeeds, none of he remaining else if's or else's will be tested.

Example Program

Here is the simple program for else-if statement in C++.

Source Code Example : 1

#include<iostream>
using namespace std;
int main()
{
   int num=66;
   if(num<50)
   {
      cout<<"\nNumber is less than 50";
   }
   else
   {
      cout<<"\nNumber is greater than 50";
   }
   return 0;
}
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Output

Number is greater than 50

Source Code Example : 2

#include <iostream>
using namespace std;
int main()
{
    int number;
    cout<<"\nEnter an integer: ";
    cin>>number;
    if(number>=0)
    {
        cout<<"\nYou entered a positive integer: "<<number<<endl;
    }
    else
    {
        cout<<"\nYou entered a negative integer: "<<number<<endl;
    }
    return 0;
}
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Output

Enter an integer: 67
You entered a positive integer: 67

Source Code Example : 3

#include <iostream>
using namespace std;
int main()
{
    int number;
    cout<<"\nEnter an integer: ";
    cin>>number;
    if(number>0)
    {
        cout<<"\nYou entered a positive integer: "<<number<<endl;
    }
    return 0;
}
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Output

Enter an integer: 69
You entered a positive integer: 69

Source Code Example : 4

#include <iostream>
using namespace std;
int main()
{
    int time=20;
    if (time<18)
    {
        cout<<"\nGood day.";
    }
    else
    {
        cout<<"\nGood evening.";
    }
}
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Output

Good evening.

Source Code Example : 5

#include <iostream>
using namespace std;
int main()
{
    int x=20;
    int y=18;
    if(x>y)
    {
        cout<<"x is greater than y";
    }
    else
    {
        cout<<"y is greater than x";
    }
}
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Output

x is greater than y

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