In C++ if statement is used to check the truthness of the expression. Condition written inside If statement consists of a boolean expression. If the condition written inside if is true then if block gets executed.
Syntax
The syntax of if statement is as follows :
if (condition){
statement;
}
The above syntax is used for single statement. A set of statements can also be made conditional. In this case, these statements are written in curly brackets { } . The set of statements is also called compound statements.
The syntax for compound statements in if statement is as follows :
if (condition){
statement 1;
statement 2;
.
.
statement n;
}
Example :
void main(){
int marks;
cout<<"Enter Marks : ";
cin>>marks;
if (marks>40) //////////////////////////Condition/////////////
cout<<"Congratulations.....You Have Passed."; ////////////////Statement////////////
getch();
}
If user enter more than 40 marks then statement is excuted otherwise display will be empty.
Firstly check if condition, condition is fulfil then enter into a body otherwise program will be terminated.
Output :
Enter Marks : 80
Congratulations.....You Have Passed.
Again Run the program,
Enter Marks : 30
///program will be terminated and display screen will be empty.
