Nested if in C++

It is perfectly all right if we write an entire if-else construct within either the body of the if statement or the body of an else statement.

Syntax :

if( boolean_expression 1) {
   // Executes when the boolean expression 1 is true
   if(boolean_expression 2) {
      // Executes when the boolean expression 2 is true


WAP to check the given natural number is even or odd.
using namespace std; 
int main( )
 int x ;
 cout<< "Enter any number: ";
 if(x>0) {
  if(x%2 == 0)
   cout<< "X is EVEN\n";
   cout<< "X is ODD\n";
 else {
   cout<< "Not Natural Number\n";
 return 0;
Enter any number: 12

Next topic is Switch-Case in C++


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