Question

program for first 20 odd numbers in descending order in c

Answer 1

#include <stdio.h>

main() {

   int a = 21;
   int b = 10;
   int c ;

   if( a == b ) {
      printf("Line 1 - a is equal to b\n" );
   } else {
      printf("Line 1 - a is not equal to b\n" );
   }
	
   if ( a < b ) {
      printf("Line 2 - a is less than b\n" );
   } else {
      printf("Line 2 - a is not less than b\n" );
   }
	
   if ( a > b ) {
      printf("Line 3 - a is greater than b\n" );
   } else {
      printf("Line 3 - a is not greater than b\n" );
   }
   
   /* Lets change value of a and b */
   a = 5;
   b = 20;
	
   if ( a <= b ) {
      printf("Line 4 - a is either less than or equal to  b\n" );
   }
	
   if ( b >= a ) {
      printf("Line 5 - b is either greater than  or equal to b\n" );
   }
}

Answer 2

#include<stdio.h>
void main()
{
    int i,n,odd;
    printf("enter the value of odd number");
    scanf("%d",&n);
    for(i=1;i<=n;i++)
    {
    odd=2*n-(2*i-1);
    printf("%d",odd);
    printf("\n");
    }
    

}