Loops are used to repeat a block of code. Being able to have your program repeatedly execute a block of code is one of the most basic but useful tasks in programming like C ,C++ , Java ,Python, .Net etc.
There are 3 sections of Loop:
- Variable initialization.( e.g int x=0; )
- condition( e.g while( x<=10) )
- Variable increment or decrement ( x++ or x– or x=x+2 )
Types of Loop:
1. Entry Control Loop:
a. For Loop
for ( variable initialization; condition; variable update ) {
Code to execute while the condition is true
}
b. While Loop
variable initialization ;
while (condition)
{
statements ;
variable update;
}
2. Exit Control Loop:
Do – While Loop
variable initialization ;
Do
{ statements ;
variable updates;
} while (condition);
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