Nested if Statement

Nested if Statement is one of the decisions making statements in C++ that flows according to certain conditions.A nested if statement is an if-else statement with another if statement as the if body or the else body.When there is an if statement within another if statement it is known as a nested if statement.

 
    #include < iostream>
using namespace std;
 
int main () {
   // local variable declaration:
   int a = 100;
   int b = 200;
 
   // check the boolean condition
   if( a == 100 ) {
      // if condition is true then check the following
      if( b == 200 ) {
         // if condition is true then print the following
         cout << "Value of a is 100 and b is 200" << endl;
      }
   }
   cout << "Exact value of a is : " << a << endl;
   cout << "Exact value of b is : " << b << endl;
 
   return 0;
}