FOR LOOP IN "C"

THE IDEA OF "for"  LOOP IS USED WHEN THERE IS REPETITION OF SAME LINES(ALSO KNOWN AS ITERATION OF LINES).

for(i=0;i<100;i++)
{
printf("FOR LOOP IS EASY TO UNDERSTAND")
}


THIS ONE LINE CODE PRINTS THE STATEMENT INSIDE "printf"  100 TIMES AND REDUCES THE TASK OF WRITING THE SAME LINE 100 TIME.
THE LOOP WILL START FROM (i=0) AND WILL EXECUTE UNTILL (i<100) AND EACH TIME THE LOOP EXECUTES THE VALUE OF "i" INCREASES BY 1.

for ( <expression_1> ; <expression_2> ; <expression_3> )
    <statement>

• expression_1 is used for intializing variables which are generally used for controlling the terminating flag for the loop.
• expression_2 is used to check for the terminating condition. If this evaluates to false, then the loop is terminated.
• expression_3 is generally used to update the flags/variables.

THIS PROBLEM OF HACKERRANK WILL GIVE YOU IDEA OF  USING "for loop" along with "switch case statement" .

https://www.hackerrank.com/challenges/for-loop-in-c/problem?h_r=internal-search

#include <stdio.h>

#include <string.h>

#include <math.h>

#include <stdlib.h>

int main() 

{

    int a, b;

    int i;

    scanf("%d\n%d", &a, &b);

    i=a;

      while(i<=9&&i<=b)

      { 

          switch(i)

          {

              case 1:

              printf("one");

              break;

              case 2:

              printf("two");

              break;

              case 3:

              printf("three");

              break;

              case 4:

              printf("four");

              break;

              case 5:

              printf("five");

              break;

              case 6:

              printf("six");

              break;

              case 7:

              printf("seven");

              break;

              case 8:

              printf("eight");

              break;

              case 9:

              printf("nine");

              break;

              

          }

          printf("\n");

          i++;

      }

        for(i=10;i<=b;i++)

          {

              if(i%2==0)

              printf("even");

              else

              printf("odd");

              printf("\n");

          }

    return 0;

}