Simple C Programs Part 1

It is a series, I started to give more information to my followers and also improve my knowledge.

1. Hello World

#include <stdio.h>

int main(void) {
  printf("Hello, world!\n");
printf("Wellcome to My Profile !! Keep Reading")
  return 0;
}

2. Data Types and Declaration

x = 10
y = 3.140000
c = A
b = 1

//How did you declare these data to that desired variables in c programming

Don’t Worry I will Guide You. Just Read,

Example 1

#include <stdio.h>

int main(void) {
  // Declare and initialize variables of different data types
  int x = 10;
  float y = 3.14;
  char c = 'A';
  _Bool b = 1;

  // Print the values of the variables
  printf("x = %d\n", x);
  printf("y = %f\n", y);
  printf("c = %c\n", c);
  printf("b = %d\n", b);

  return 0;
}

Example 2

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

int main(void) {
  // Declare and initialize variables of different data types
  short s = 32767;
  long l = 2147483647;
  long long ll = 9223372036854775807;
  unsigned int ui = 4294967295;
  double d = 3.14;
  long double ld = 3.14159265358979323846;
  bool b = true;

  // Print the values of the variables
  printf("s = %hd\n", s);
  printf("l = %ld\n", l);
  printf("ll = %lld\n", ll);
  printf("ui = %u\n", ui);
  printf("d = %f\n", d);
  printf("ld = %Lf\n", ld);
  printf("b = %d\n", b);

  return 0;
}

3. Leap Year

#include <stdio.h>

int main(void) {
  int year;

  printf("Enter a year: ");
  scanf("%d", &year);

  if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {
    printf("%d is a leap year\n", year);
  } else {
    printf("%d is not a leap year\n", year);
  }

  return 0;
}

4. Factorial

If I give 5 it will need to print 125.

Input: 5

Process: 5*4*3*2*1

Output: 125

#include <stdio.h>

int main(void) {
  int num, factorial = 1;

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

  for (int i = 1; i <= num; i++) {
    factorial *= i;
  }

  printf("The factorial of %d is %d\n", num, factorial);

  return 0;
}

5. Odd or Even

Input: 2

Output: 2 is even

#include <stdio.h>

int main(void) {
  int num;

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

  if (num % 2 == 0) {
    printf("%d is even\n", num);
  } else {
    printf("%d is odd\n", num);
  }

  return 0;
}

Thank You for Reading This. I hope you got some knowledge from this Blog. Work Out with Your Hands