Question

print all even numbers before 100

Answer 1

#include <stdio.h> 
   
int main() { 
    int counter;
    printf("Even numbers between 1 to 100\n"); 
    /*
     * Initialize counter with 1, and increment it in every iteration.
     * For every value of counter check whether it is even number or
     * not and print it accordingly
     */ 
    for(counter = 1; counter <= 100; counter++) { 
        /* Even numbers are divisible by 2 */ 
        if(counter%2 == 0) {
            /* counter is even, print it */
            printf("%d ", counter); 
        } 
    } 
   
    return 0; 
}

Answer 2

/**

* C program to print all even numbers from 1 to n

*/

#include <stdio.h>

int main()

{

   int i, n;

 

   /* Input upper limit of even number from user */

   printf("Print all even numbers till: ");

   scanf("%d", &n);

   printf("Even numbers from 1 to %d are: \n", n);

   /*

    * Start loop counter from 1, increment it by 1,

    * will iterate till n

    */

   for(i=1; i<=n; i++)

   {

       /* Check even condition before printing */

       if(i%2 == 0)

       {

           printf("%d\n", i);

       }

   }

   return 0;

}

Logic to print even