C CODING

    What is a prime number in definition? A prime number is a whole number is greater than 1whose only factors are 1 and itself. A factors a whole number that can be  divided evenly into another number. The first few prime number are : 2, 3, 5, 7, 11, 13, 17, 19 and  23  etc.  The following program check the input number is prime or not. #include <stdio.h> int isprime( int ); int main() {     int num;     printf( "Enter the Number check it is prime or not :" );     scanf( "%d" ,&num);     if (isprime(num))     {         printf( "%d is prime number.\n" , num);     }     else     {         printf( "%d is not a prime number.           \n" ,num);     }     return 0 ; } int isprime( int n) {     int i = 2 ;     while (i<n)     { ...

  What is Palindrome number  ? A palindrome  number is a number  that remains same when digits are reversed. For example, the number 1551 is a palindrome number, but 1541 is not a palindrome number.  * note : Negative number can not be palindrome. Now here we understand the following program is palindrome or not. #include <stdio.h> int reverse( int ); int palindrome( int ); int main() {     int num;     printf( "Enter the number check it isPalindrome or not : " );     scanf( "%d" ,&num);     if (palindrome(num)) // 1 for true or 0 for false     {         printf( "%d is palindrome.\n" ,num);     }     else     {         printf( "%d is not palindrome." ,num);     }     return 0 ; } int palindrome( int n) {     if (n==reverse(n)) // if reverse and the number is equal then it isPalindrome...

Program to convert a binary to decimal number. #include <stdio.h> int main() {     int n, sn, i = 1 , dec = 0 , rem;     printf( "Enter a binary number:\t" );     scanf( "%d" , &n);     sn = n;     while (n > 0 ) /* work when number is greater than 0.*/     {         rem = n % 10 ; // reminder is 0 or 1 only         if (rem == 1 || rem == 0 ) //binary number         {             dec = dec + rem * i;             i *= 2 ; // power of 2's.             n = n / 10 ;         }     }     printf( "Decimal Equivalent of %d is %d " , sn, dec);     return 0 ; } Output : Enter a binary number: 1101 Decimal Equivalent of 1101 is 13 for this we extract binary digits from right and add them after multiplying power of ...

program find out the percentage of a student. In this program we have take marks of student out off  100 where marks in real form then be use float type variable declare 5 variable m1,m2,m3,m4,m5 float type. Now we find out the percentage of a student in five subjects. take a variable store the value of %age as float type. firstly, find sum of marks gain by the student, then after % = (sum/500)*100 we can also write sum/5 ; #include <stdio.h> int main() {     float m1,m2,m3,m4,m5,per,sum;     printf( "Marks in English:" );     scanf( "%f" ,&m1);     printf( "Marks in Hindi:" );     scanf( "%f" ,&m2);     printf( "Marks in Physics:" );     scanf( "%f" ,&m3);     printf( "Marks in Maths:" );     scanf( "%f" ,&m4);     printf( "Marks in Chemistry:" );     scanf( "%f" ,&m5);     sum=m1+m2+m3+m4+m5;     per=sum/ 5 ;     p...

 Delimiters :  A delimiter is one or more character that separate text string. when a program stores sequential or tabular data, it delimits each items of data with a predefine character.  Delimiters are used  for syntactics in C. :           colon                               used  for label         ;           semicolon                       end of statement ()          parentheses                   used in expression []          square brackets           used for array {}        curly braces                   used for block of...

Digraph Character : The Diagraph are sequence of two character that the compiler replaces with their corresponding punctuation character. Digraph sequence Symbol <% { left brace %> } right brace <: [ left bracket :> ] right bracket %: # hash %: include <stdio.h> int main() <%     printf( "Hello world!" );     return 0 ; %> which is treated the same as :- #include <stdio.h> int main() {       printf( "Hello world!" );     return 0 ; } Trigraph Character : Trigraph are sequence of three characters (introduced by two consecutive Question marks ) that the compiler replaces with their corresponding punctuation characters.  some keywords may not have all the characters from the C character set. C supports the facility of "trigraph sequence" to print these characters. These trigraph sequences have three characters. First two are '??' and third character from C character set. some trigraph sequences are as given...