Flowchart

If we do not provide the curly braces ‘{‘ and ‘}’ after if( condition ) then by default if statement will consider the immediate one statement to be inside its block.

For example:

if(condition)    
statement1;    
statement2;  // Here if the condition is true if block will consider only statement1 to be inside  its block.

Decision-making in C++ helps to write decision-driven statements and execute a particular set of code based on certain conditions.

The C++ if statement is the most simple decision-making statement. It is used to decide whether a certain statement or block of statements will be executed or not executed based on a certain type of condition.