C Programming Codes

Unlocking the Mystery: How Many Digits Does Your Number Hide?

#include <stdio.h>

int countDigits(int n) {
    int count = 0;
    if (n == 0) return 1; 
    while (n != 0) {
        n /= 10;
        count++;
    }
    return count;
}

int main() {
    int num;
    printf("Enter an integer: ");
    scanf("%d", &num);
    printf("Number of digits: %d\n", countDigits(num));
    return 0;
}

#Cprogramming #DigitSum #Algorithm

Cracking the Code: Can you calculate the sum of digits in a number using C?

#include <stdio.h>

int main() {
    int num, sum = 0, m;

    scanf("%d", &num);

    while (num > 0) {
        m = num % 10;
        sum = sum + m;
        num = num / 10;
    }

    printf("%d", sum);
    return 0;
}

#Cprogramming #loops #iteration

Printing Numbers: Mastering Loops in C

#include <stdio.h>

int main() {
  int n;
  printf("Enter a positive integer: ");
  scanf("%d", &n);

  printf("Using for loop:\n");
  for (int i = 1; i <= n; i++) {
    printf("%d ", i);
  }
  printf("\n");

  printf("Using while loop:\n");
  int j = 1;
  while (j <= n) {
    printf("%d ", j);
    j++;
  }
  printf("\n
");

  printf("Using do-while loop:\n");
  int k = 1;
  do {
    printf("%d ", k);
    k++;
  } while (k <= n);
  printf("\n");

  return 0;
}

## C Programming: Loops and Patterns! 🔄✨ Ready to unleash the power of repetition? Let's dive into Loops and Patterns in C! They're the key to automating tasks and creating cool visual designs. ### What are Loops? Loops let you execute a block of code multiple times. Imagine repeating "Hello, world!" ten times without manually typing it out! That's the magic of loops. C offers three main types: * **`for` loop:** Best when you know *exactly* how many times you need to repeat. * **`while` loop:** Repeats as long as a condition is true. Great for situations where you don't know the exact number of repetitions beforehand. * **`do-while` loop:** Similar to `while`, but executes the code block *at least once*, regardless of the initial condition. ### Loop Syntax: * **`for` loop:** ```c for (initialization; condition; increment/decrement) { // Code to be repeated } ``` * **`while` loop:** ```c while (condition) { // Code to be repeated } ``` * **`do-while` loop:** ```c do { // Code to be repeated } while (condition); ``` ### Pattern Printing! 📐 Loops aren't just for calculations. They can create amazing patterns! The key is understanding how nested loops can control rows and columns. **Example: Printing a Right Triangle** ```c #include <stdio.h> int main() { int rows = 5; for (int i = 1; i <= rows; i++) { for (int j = 1; j <= i; j++) { printf("*"); } printf("\n"); } return 0; } ``` This code outputs: ``` * ** *** **** ***** ``` **Explanation:** * **Outer loop (`i`):** Controls the number of rows. * **Inner loop (`j`):** Controls the number of stars printed in each row. `j` depends on `i`, creating the triangle shape. `printf("\n");` starts a new line after each row. ### Practice Time! 📝 Try these exercises to solidify your understanding: * **`for` loop:** Print numbers from 1 to 10. * **`while` loop:** Calculate the sum of numbers until the user enters 0. * **`do-while` loop:** Keep asking the user for input until they enter a valid number. * **Pattern printing:** Print a square, an inverted triangle, or a more complex pattern of your choice! (Search for "C pattern programs" for inspiration!) Mastering loops and patterns is a fundamental skill. Keep practicing, and you'll be writing elegant and efficient C code in no time! #Cprogramming #Loops #Patterns #Coding #Beginner

#Cprogramming #Divisors #NumberTheory

Can you find all the friends (divisors) of a number in C?

#include <stdio.h>

int main() {
    int num, i;

    printf("Enter a positive integer: ");
    scanf("%d", &num);

    printf("Divisors of %d are: ", num);
    for (i = 1; i <= num; ++i) {
        if (num % i == 0) {
            printf("%d  ", i);
        }
    }
    printf("\n");
    return 0;
}

#CProgramming #MultiplicationTable #Loops

C Multiplication Table: A Classic Loop Challenge!

#include <stdio.h>

int main() {
    int n, i, j;

    printf("Enter the number of rows: ");
    scanf("%d", &n);

    for (i = 1; i <= n; i++) {
        for (j = 1; j <= n; j++) {
            printf("%4d", i * j);
        }
        printf("\n");
    }

    return 0;
}

#Cprogramming #Fibonacci #Loops

Unlocking the Fibonacci Sequence with C Loops!

#include <stdio.h>

int main() {
  int n, i;
  long long t1 = 0, t2 = 1;
  long long nextTerm = t1 + t2;

  printf("Enter the number of terms: ");
  scanf("%d", &n);

  printf("Fibonacci Series: %lld, %lld, ", t1, t2);

  for (i = 3; i <= n; ++i) {
    printf("%lld, ", nextTerm);
    t1 = t2;
    t2 = nextTerm;
    nextTerm = t1 + t2;
  }
  printf("\n");
  return 0;
}

#Cprogramming #ArmstrongNumber #NumberTheory

Is That Number Really an Armstrong Number?

#include <stdio.h>
#include <math.h>

int main() {
    int num, originalNum, remainder, n = 0;
    float result = 0.0;

    printf("Enter an integer: ");
    scanf("%d", &num);

    originalNum = num;

    while (originalNum != 0) {
        originalNum /= 10;
        ++n;
    }

    originalNum = num;

    while (originalNum != 0) {
        remainder = originalNum % 10;
        result += pow(remainder, n);
        originalNum /= 10;
    }

    if ((int)result == num)
        printf("%d is an Armstrong number.\n", num);
    else
        printf("%d is not an Armstrong number.\n", num);

    return 0;
}

#Cprogramming #Palindrome #Algorithm

Is Your Number a Mirror Image? C Palindrome Challenge!

#include <stdio.h>
#include <stdbool.h>

bool isPalindrome(int num) {
    int reversedNum = 0, remainder, originalNum = num;
    while (num != 0) {
        remainder = num % 10;
        reversedNum = reversedNum * 10 + remainder;
        num /= 10;
    }
    return originalNum == reversedNum;
}

int main() {
    int number;
    scanf("%d", &number);
    if (isPalindrome(number)) {
        printf("Palindrome");
    } else {
        printf("Not Palindrome");
    }
    return 0;
}

Cprogramming NumberReversal Algorithms

Can you flip a number in C?

#include <stdio.h>

int main() {
    int num, reversed_num = 0, remainder;

    printf("Enter an integer: ");
    scanf("%d", &num);

    while (num != 0) {
        remainder = num % 10;
        reversed_num = reversed_num * 10 + remainder;
        num /= 10;
    }

    printf("Reversed number = %d", reversed_num);

    return 0;
}

#Cprogramming #Factorial #Loop

Calculating Factorial: A Classic C Loop!

#include <stdio.h>

int main() {
    int n, i;
    unsigned long long factorial = 1;

    printf("Enter an integer: ");
    scanf("%d", &n);

    if (n < 0) {
        printf("Error! Factorial for negative numbers doesn't exist.");
    } else {
        for (i = 1; i <= n; ++i) {
            factorial *= i;
        }
        printf("Factorial of %d = %llu", n, factorial);
    }
    return 0;
}