Loops
In computer programming, loops are used to repeat a block of code . For example, let's say we want to show a message 1000times , Then instead of writing the print statement 1000 times, we can use a loop.
Type of loops
1. For loop
2. While loop
3. Do while loop
For loop
For loop uses an external variable to control the execution. A for loop takes into account the
Initialization
Condition checking
Incrementation
In its syntax itself. The syntax is shown below:-
For(initialization;condition;incrememt){
//body
}
While loop
Imagine we had to print “Hello World” 100 times or n-number of times. Would it be wise to write cout << “Hello World\n” 100 times. While loops help us automate this.
Sometimes, the loop also uses an external initialization and incrementation logic to control how many times the loop may run
In its syntax itself. The syntax is shown below:
initialization;
While (condition) {
//body
}
Do while loop
Do While Loop
Do while is very similar to while loop with one difference that it is exit control loop.
That is the decision to run the loop again or not happens at the time of exit of the current loop.
While in the while loop it happens before entry in the loop.
Sometimes, the loop also uses an external initialization and incrementation logic to control how many times the loop may run
Do{
//body
}while (condition);
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