LOOP STATEMENT

Loop statements are used to execute a block of code repeatedly, either for a specified number of times or until a certain condition is met. Here's an overview of various loop constructs and control statements:

• for: Repeats code a specified number of times.
• for/in: Iterates over the properties of an object (JavaScript).
• for/of: Iterates over iterable objects (JavaScript).
• while: Repeats code as long as a condition is true.
• do/while: Executes code once, then repeats as long as a condition is true.
• Infinite Loop: Runs indefinitely.
• break: Exits the loop immediately.
• continue: Skips to the next iteration of the loop.

1. for Loop

The for loop is used when you know in advance how many times you want to execute a statement or a block of statements.

• Syntax:
  
  for (initialization; condition; update) {

  // code to be executed

  }

• Example:
  
  for (int i = 0; i < 5; i++) {

  printf("i = %d\n", i);

  }

2. for/in Loop (JavaScript)

The for...in loop iterates over the properties of an object.

• Syntax:
  
  for (variable in object) {

  // code to be executed

  }

• Example:
  
  let person = {fname: "John", lname: "Doe", age: 25};

  for (let x in person) {

  console.log(x + ": " + person[x]);

  }

3. for/of Loop (JavaScript)

The for...of loop iterates over iterable objects (arrays, strings, etc.).

• Syntax:
  
  for (variable of iterable) {

  // code to be executed

  }

• Example:
  
  let arr = [1, 2, 3, 4, 5];

  for (let value of arr) {

  console.log(value);

  }

4. while Loop

The while loop executes a block of code as long as the specified condition is true.

• Syntax:
  
  while (condition) {

  // code to be executed

  }

• Example:
  
  int i = 0;

  while (i < 5) {

  printf("i = %d\n", i);

  i++;

  }

5. do/while Loop

The do/while loop is similar to the while loop, but it executes the block of code once before checking the condition.

• Syntax:
  
  do {

  // code to be executed

  } while (condition);

• Example:
  
  int i = 0;

  do {

  printf("i = %d\n", i);

  i++;

  } while (i < 5);

6. Infinite Loop

An infinite loop runs indefinitely because the condition never becomes false. Use with caution.

• Example:
  
  while (1) {

  // code to be executed endlessly

  }

  
  
  

  for (;;) {

  // code to be executed endlessly

  }

7. break Statement

The break statement exits the loop immediately.

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

  if (i == 5) {

  break;

  }

  printf("i = %d\n", i);

  }

8. continue Statement

The continue statement skips the rest of the code inside the loop for the current iteration and jumps to the next iteration.

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

  if (i == 5) {

  continue;

  }

  printf("i = %d\n", i);

  }