C++ provides several types of loops to repeat blocks of code, including while, for, do-while, and nested loops. Loop control statements like break, continue, and goto change the normal execution flow. An infinite loop is one whose condition never becomes false, allowing the loop to repeat indefinitely until terminated.

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C++ LOOP TYPES
There may be a situation, whenyouneed to execute a block of code severalnumber of times. Ingeneral
statements are executed sequentially: The first statement ina functionis executed first, followed by the second,
and so on.
Programming languages provide various controlstructures that allow for more complicated executionpaths.
A loop statement allows us to execute a statement or group of statements multiple times and following is the
generalfromof a loop statement inmost of the programming languages:
C++ programming language provides the following types of loop to handle looping requirements. Click the
following links to check their detail.
Loop Type Description
while loop Repeats a statement or group of statements while a givenconditionis true.
It tests the conditionbefore executing the loop body.
for loop Execute a sequence of statements multiple times and abbreviates the code
that manages the loop variable.
do...while loop Like a while statement, except that it tests the conditionat the end of the loop
body
nested loops Youcanuse one or more loop inside any another while, for or do..while
loop.
Loop Control Statements:
Loop controlstatements change executionfromits normalsequence. Whenexecutionleaves a scope, all
automatic objects that were created inthat scope are destroyed.
C++ supports the following controlstatements. Click the following links to check their detail.

2. Control Statement Description
break statement Terminates the loop or switch statement and transfers executionto the
statement immediately following the loop or switch.
continue statement Causes the loop to skip the remainder of its body and immediately retest its
conditionprior to reiterating.
goto statement Transfers controlto the labeled statement. Thoughit is not advised to use
goto statement inyour program.
The Infinite Loop:
A loop becomes infinite loop if a conditionnever becomes false. The for loop is traditionally used for this
purpose. Since none of the three expressions that formthe for loop are required, youcanmake anendless loop
by leaving the conditionalexpressionempty.
#include <iostream>
using namespace std;
int main ()
{
for( ; ; )
{
printf("This loop will run forever.n");
}
return 0;
}
Whenthe conditionalexpressionis absent, it is assumed to be true. Youmay have aninitializationand increment
expression, but C++ programmers more commonly use the for(;;) construct to signify aninfinite loop.
NOTE: Youcanterminate aninfinite loop by pressing Ctrl+ C keys.