Loops examples in C Language Here are some Loops examples in C Language Working with For Loops Printing Numbers 1 to 5: #include <stdio.h>int main() {for (int i = 1; i <= 5; i++) {printf("%d ", i);}printf("\n");return 0;} • Initializes a loop variable ' i ' to 1.• The loop continues as long as ' i ' is less than or equal to 5.• Increments ' i ' in each iteration.• Prints the value of ' i ' and a space.• After the loop, a newline is printed. Computing Factorial: #include <stdio.h>int main() {int n, factorial = 1;printf("Enter a positive integer: ");scanf("%d", &n);for(int i = 1; i <= n; i++) {factorial *= i;}printf("Factorial of %d = %d\n", n, factorial);return 0;} • Calculates the factorial of a positive integer entered by the user.• Initializes ' factorial ' to 1.• The loop iterates from 1 to ' n ' and multiplies ' factorial ' by the loop variable in each iteration. Displaying Multiplication Table: #include <stdio.h>int main() {int num;printf("Enter a number to display its multiplication table : ");scanf("%d", &num);for(int i = 1; i <= 10; i++) {printf("%d x %d = %d\n", num, i, num * i);}return 0;} • Displays the multiplication table for a number entered by the user.• Uses a ' for ' loop to iterate from 1 to 10.• Prints the multiplication expression and result in each iteration. Working with While Loops Countdown: #include <stdio.h>int main() {int count = 5;while (count > 0) {printf("%d", count);count--;}printf("Go!\n");return 0;} • Initializes ' count ' to 5.• Executes the loop while ' count ' in each iteration and prints its value.• Prints "Go!" after the loop. Sum of Natural Numbers: #include <stdio.h>int main() {int n, sum = 0, i = 1;printf("Enter a positive integer : ");scanf("%d", &n);while (i <= n) {sum += i;i++;}printf("Sum of first %d natural numbers = %d\n", n, sum);return 0;} • Calculates the sum of the first ' n ' natural numbers using a ' while ' loop.• Initializes ' sum ' to 0 and ' i ' to 1.• Adds the value of ' i ' to ' sum ' in each iteration until ' i ' become greater than ' n ' . Password Validation: #include <stdio.h>int main() {int password = 1234;int input;printf("Enter the password: ");scanf("%d", &input);while(input != password) {printf("Incorrect Password. Try again: ");scanf("%d", &input);}printf("Access granted!\n");return 0;} • Implements a simple password validation using a ' while ' loop.• Continues prompting the user for the correct password until the entered password matches the predefined password. Working with Do-While Loop Menu Driven Program: #include <stdio.h>int main() {int choice;do {printf("1. Print Hello\n");printf("2. Print World\n");printf("3. Exit\n");printf("Enter your choice: ");scanf("%d", &choice);switch (choice) {case 1:printf("Hello\n");break;case 2:printf("World\n");break;case 3:printf("Exiting the program\n");break;default:printf("Invalid choice\n");}} while (choice != 3);return 0;} • Implements a menu-drive program using a 'do-while' loop.• Display a menu and prompts the user for a choice.• Executes the corresponding action based on the user's choice.• Continues to display the menu until the user chooses to exit (entering 3). Dice Roll Simulation: #include <stdio.h>#include <stdlib.h>#include <time.h>int main() {int dice;srand(time(NULL));do {printf("Press '1' to rool the dice , or enter 0 to exit: ");scanf("%d", &dice);if (dice == 1) {int result = rand() % 6 + 1;printf("You rolles a %d\n", result);} else if (dice != 0) {printf("Please try again.\n");} else {printf("Exiting the program\n");}} while (dice != 0 );return 0;} • Simulates rolling a six-sided dice using a 'do-while' loop.• Prompts the user to press Enter to roll the dice or enter 0 to exit.• Generates a random number between 1 and 6 and displays the result.• Continues to roll the dice until the user chooses to exit. Number Guessing Game: #include <stdio.h>#include <stdlib.h>#include <time.h>int main() {int secretNumber, guees;srand(time(NULL));secretNumber = rand() %% 100 + 1;do {printf("Enter your guess or enter 0 to exit: ");scanf("%d", &guess);if(guess == 0) {printf("Exiting the game. The secret number was %d.\n", secretNumber);} else if (guess < secretNumber) {printf("Too low! Try again.\n");} else if (guess > secretNumber) {printf("Too high! Try again.\n");} else {printf("Congratulations! You guessed the secret number (%d). \n", secretNumber);}} while (guess != 0 && guess != secretNumber);return 0;} • Implements a simple number guessing game using a 'do-while' loop.• Generates a random number between 1 and 100 that the user needs to guess.• Prompts the user to enter their guess or enter 0 to exit.• Provide feedback on whether the guess in too low, too high, or correct.• Continues until the user correctly guesses the number or chooses to exit.
