Nested if Statements in C++
In C++, nested if-else statements are legal, which means you can use another if or else if statement within an if or else if statement.
Syntax
The syntax for a nested if statement in C++:
if( boolean_expression 1)
{
// Executed when boolean expression 1 is true
if(boolean_expression 2)
{
// Executed when boolean expression 2 is true
}
}
You can nest else if...else in a similar way to nesting if statements.
Example
#include <iostream>
using namespace std;
int main ()
{
// Local variable declaration
int a = 100;
int b = 200;
// Check boolean condition
if( a == 100 )
{
// Check the following condition if the condition is true
if( b == 200 )
{
// Print the following statement if the condition is true
cout << "The value of a is 100, and the value of b is 200" << endl;
}
}
cout << "The exact value of a is " << a << endl;
cout << "The exact value of b is " << b << endl;
return 0;
}
When the above code is compiled and executed, it produces the following result:
The value of a is 100, and the value of b is 200
The exact value of a is 100
The exact value of b is 200