C++ Nested If Statement

In C++ we can use if statement in the another else block. or we can also include if block in the another if block.

Syntax : C++ Nested If

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

We can nest else if…else in the similar way as you have nested if statement.

Example : Nested If-else

#include <iostream>
using namespace std;
int main ()
{
   int marks = 55;
   if( marks >= 80) {
      cout << "U are 1st class !!";
   } 
   else {
      if( marks >= 60) {
          cout << "U are 2nd class !!";
      }  
      else {
	if( marks >= 40) {
  	  cout << "U are 3rd class !!";
	}
	else {  
	  cout << "U are fail !!";
        }		  
      }
   }
   return 0;
}

Output :

U are 3rd class !!