if else Statement in C++ Programming

The if else statement executes a block of code if a specified condition is true. If the condition is false, another block of code can be executed. An if statement executes code conditionally depending on the result of the condition in parentheses.

When condition in parentheses is true it will enter to the block of if statement which is defined by curly braces like open braces and close braces. Opening bracket till the closing bracket is the scope of the if statement. The else block is optional and can be omitted. It runs if the if statement is false and does not run if the if statement is true because in that case if statement executes.

Syntax :
   if ( condition )
   {
       // block of statement to be executed if condition is true ;
   }
   else
   {
       block of statement to be executed if condition is false ;
   }

The program is written in C++ language and it checks whether a given character is a vowel or not. Here's how the program works:

It first declares a character variable 'c' to store the input character.
The user is then prompted to enter a character, which is read by the 'cin' statement.
The program checks if the character entered by the user is any of the vowels 'a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', or 'U' by using a logical OR operator ('||') to combine multiple conditions.
If the entered character is a vowel, the program displays a message saying that the character is a vowel.
If the entered character is not a vowel, the program displays a message saying that the character is not a vowel.
Finally, the program returns 0, indicating successful execution.

Source Code

#include<iostream>
using namespace std;
 
//aeiou AEIOU
int main()
{
    char c;
    cout<<"Enter The Character : ";
    cin>>c;
    if(c=='a' || c=='e' ||c=='i' ||c=='o' ||c=='u' || c=='A' || c=='E' ||c=='I' ||c=='O' ||c=='U')
    {
        cout<<c<<" is a Vowel";
    }
    else
    {
       cout<<c<<" is not a Vowel";
    }
    return 0;
}

Output

Enter The Character : s
s is not a Vowel

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