C Program to print first 20 natural numbers.

How to print first 20 natural numbers?

#include <stdio.h>
#include <conio.h>
void main()
{
    int i;
    for (i = 1; i <= 20; i++)
    {
        printf("%d\n", i);
    }   
    getch();
}

Expected Output:-

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

Using While Loop

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#include<stdio.h>  #include<conio.h> void main() {    int i = 1;      while (i <= 20) {       printf("%d", i);       i++;    }  getch(); }

Using Do-While Loop

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#include<stdio.h> #include<conio.h>  void main() {    int i = 1;      do {       printf("%d", i);       i++;    } while (i <= 20); getch(); }