Easy to understand

COMPUTER PROGRAMMING



TOPIC: LOOPS IN C++

, In C++, loops are control structures that allow you to execute a block of code repeatedly. They are
essential for automating repetitive tasks and iterating over data structures. C++ provides three main
types of loops: for, while, and do-while.

1. for loop:
 The for loop is typically used when you know the number of iterations in advance.

 It consists of three parts:

o Initialization: Executed only once before the loop starts. Used to initialize a loop counter
variable.

o Condition: Evaluated before each iteration. If the condition is true, the loop body is
executed. If it's false, the loop terminates.

o Increment/Decrement: Executed after each iteration. Used to update the loop counter
variable.

C++

for (int i = 0; i < 10; i++) {

// Code to be executed in each iteration

std::cout << i << " ";

}

// Output: 0 1 2 3 4 5 6 7 8 9

2. while loop:
 The while loop is used when you want to repeat a block of code as long as a condition is true.

 The condition is evaluated before each iteration. If the condition is initially false, the loop body is
never executed.

C++

int i = 0;

while (i < 10) {

// Code to be executed in each iteration

std::cout << i << " ";

i++;

}

// Output: 0 1 2 3 4 5 6 7 8 9