C program to print natural numbers from 1 to n

C program to print natural numbers from 1 to n using For Loop

In the below program, we will ask the user to enter the value of ‘n’. After entering the value of ‘n’ we will print the natural number from 1 to n with the help of for loop.

#include<stdio.h>
int main()
{
    int num, i;
    printf("Please Enter any Integer number = ");
    scanf("%d", &num);
    if(num >0)
    {
        printf("List of Natural Numbers from 1 to %d are \n", num);
        for(i = 1; i <= num; i++)
        {
            printf("%d ", i);
        }
    }
    else
    {
        printf("Enter Valid number\n");
    }
    return 0;
}

Output:

Please Enter any Integer number = 10
List of Natural Numbers from 1 to 10 are
1 2 3 4 5 6 7 8 9 10

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C program to print natural numbers from 1 to n using while Loop

In the below program, we will ask the user to enter the value of ‘n’. After entering the value of ‘n’ we will print the natural number from 1 to n with the help of a while loop.

#include<stdio.h>
int main()
{
    int num, i = 0;
    printf("Please Enter any Integer number = ");
    scanf("%d", &num);
    if(num >0)
    {
        printf("List of Natural Numbers from 1 to %d are \n", num);
        while(i <= num)
        {
            printf("%d ", i++);
        }
    }
    else
    {
        printf("Enter Valid number\n");
    }
    return 0;
}

Output:

Please Enter any Integer number = 10
List of Natural Numbers from 1 to 10 are
0 1 2 3 4 5 6 7 8 9 10