Hello world program

      value to list hello community. This program printing hello community, printf operate is used to display textual content on display, '\n' locations pointer on the beginning of next line. This may be your first c value while learning development.

#include<stdio.h>

void  main()

{

      printf("Hello world\n");

      getch(0;

}

We may store "hello world" in a character array and then print it.

#include<stdio.h>

void main()

{

      char string[ ] = "Hello World";

      printf("%s\n", string);

      getch();

}

output:-

Print integer

              This c system first information an integer and then printing it. Feedback is done using scanf operate and variety is produced on display using printf.


 #include
 void main()
{
    int a;

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

    printf("Integer that you have Enter is %d\n", a);

    getch();
}

output:-

Addition

c program to add two numbers:-

                    C program to add two numbers: This c language program perform the basic arithmetic operation of addition on two numbers and then prints the sum on the screen. For example if the user entered two numbers as 5, 6 then 11 ( 5 + 6 ) will be printed on the screen.

#include<stdio.h>

void main()

{

   int a, b, c;

   printf("Enter two number to add\n");

   scanf("%d%d",&a,&b);

   c = a + b;

   printf("Sum of Enter number = %d\n",c);

   getch();

}

output:-

Addition without using third variable:-

#include<stdio.h>

void main()

{

   int a = 1, b = 2;

   /* Storing result of addition in variable a */

   a = a + b;

   /* Not recommended because original value of a is lost

    * and you may be using it some where in code considering it

    * as it was entered by the user.*/

   printf("Sum of a and b = %d\n", a);

   getch();

}

                                                                                                                                                                 C program to add two numbers repeatedly:-

                                                                                                                                                

#include<stdio.h>
void main()

{

   int a, b, c;

   char ch;

   while(1)

   {

      printf("Enter values of a and b\n");

      scanf("%d%d",&a,&b);

      c = a + b;

      printf("a + b = %d\n", c);

      printf("Do you wish to add more numbers(y/n)\n");

      scanf(" %c",&ch);

      if ( ch == 'y' || ch == 'Y' )

         continue;

      else

    break;

   }

getch();

}

Adding numbers in c using function:-

We have used lengthy information kind as it can manage thousands.

#include<stdio.h>
#include<conio.h>

long addition(long, long);

void main()
{
   long first, second, sum;

   scanf("%ld%ld", &first, &second);

   sum = addition(first, second);

   printf("%ld\n", sum);

   getch();
}

long addition(long a, lengthy b)
{
   long result;

   return = a + b;

  return result;
}

Addition,subtraction,multiplication and division

                                    C program to perform basic arithmetic operations i.e. addition , subtraction, multiplication and division of two numbers. Numbers are assumed to be integers and will be entered by the user.

C program code:-


#include <stdio.h>
#include<conio.h>

void main()
{
   int   first, second, add, subtract, multiply;
   float divide;

   printf("Enter two integers\n");
   scanf("%d%d", &first, &second);

   add = first + second;
   subtract = first - second;
   multiply = first * second;
   divide = first / (float)second;   //typecasting

   printf("Sum = %d\n",add);
   printf("Difference = %d\n",subtract);
   printf("Multiplication = %d\n",multiply);
   printf("Division = %.2f\n",divide);

   getch();
}

output:-

Check vowel

                  This code checks whether an input alphabet is a vowel or not. Both lower-case and upper-case are checked.

C programming code:-


#include<stdio.h>
 void main()
{
      char ch;

      printf("Enter a character\n");
      scanf("%c",&ch);

      if ( ch == 'a' || ch == 'A' || ch == 'e' || ch == 'E' || ch == 'i' || ch == 'I' || ch =='o' || ch=='O' || ch == 'u' || ch == 'U')
         printf("%c is a vowel.\n", ch);
      else
          printf("%c is not a vowel.\n", ch);

      getch();
}

Check vowel using switch statement:-

#include<stdio.h>
#include<conio.h>

void main()
{
   char ch;

   printf("Enter a character\n");
   scanf("%c",&ch);

   switch(ch)
   {
      case  'a':
      case 'A':
      case 'e':
      case 'E':
      case 'i':
      case 'I':
      case 'o':
      case'O':
      case 'u':
      case 'U':
            printf("%c is a vowel.\n", ch);
            break;
      default:
            printf("%c is not a vowel.\n", ch);
   }                  

   getch();
}

odd or even

#include<stdio.h>

void main()
{
   int n;

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

   if ( n%2 == 0 )
      printf("Even\n");
   else
      printf("Odd\n");

   getch();
}

C program to check odd or even using bitwise operator:-

#include<stdio.h>
#include<conio.h>

void main()
{
   int n;

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

   if ( n & 1 == 1 )
      printf("Odd\n");
   else
      printf("Even\n");

   getch();
}

C program to check odd or even without using bitwise or modulus operator:-

#include<stdio.h>
#include<conio.h>

void main()
{
   int n;

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

   if ( (n/2)*2 == n )
      printf("Even\n");
   else
      printf("Odd\n");

   getch();
}