C Program to Print Natural Numbers from 1 to N

C program to print all natural numbers from 1 to n; Through this tutorial, we will learn how to c program to print all natural numbers from 1 to n (10, 100, 500, 1000, etc) using for loop, while loop and recursion function.

Algorithm to print all natural numbers from 1 to n

Use the following algorithm to write a c program to print all natural numbers from 1 to n (10, 100, 500, 1000, etc); as follows:

• Step 1: Start
• Step 2: Assign i=1
• Step 3: Read a number, num
• Step 4: Repeat step 5&6 until i=num reach
• Step 5: Print i
• Step 6: Compute i=i+1
• Step 7: Stop

Programs to Print Natural Numbers from 1 to N in C

• C Program to Print Natural Numbers from 1 to N using While Loop
• C Program to Print Natural Numbers from 1 to N using For Loop
• C Program to Print Natural Numbers from 1 to N using Recursion

C Program to Print Natural Numbers from 1 to N using While Loop

/* C Program to Print Natural Numbers from 1 to N using While Loop */

#include<stdio.h>

int main()
{
  	int Number, i = 1;

  	printf("\n Please Enter any Integer Value :- ");
  	scanf("%d", &Number);

  	printf("\n List of Natural Numbers from 1 to %d are \n", Number);
	while(i <= Number)
  	{
    	printf(" %d \t", i);
    	i++;
  	}

  	return 0;
}

The output of the above c program; as follows:

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

C Program to Print Natural Numbers from 1 to N using For Loop

/* C Program to Print Natural Numbers from 1 to N using For Loop */

#include<stdio.h>

int main()
{
  	int Number, i;

  	printf("\n Please Enter any Integer Value  : ");
  	scanf("%d", &Number);

  	printf("\n List of Natural Numbers from 1 to %d are \n", Number);
	for(i = 1; i <= Number; i++)
  	{
    	printf(" %d \t", i);
  	}

  	return 0;
}

The output of the above c program; as follows:

Please Enter any Integer Value :- 5
List of Natural Numbers from 1 to 5 are
 1 	 2 	 3 	 4 	 5 	

C Program to Print Natural Numbers from 1 to N using Recursion

#include<stdio.h>

void display(int);

int main()
{
    int limit;

    printf("Please Enter any Integer Value  : ");
    scanf("%d", &limit);

    printf("\nNatural Numbers from 1 To %d are:", limit);
    display(limit);

    return 0;
}

void display(int num)
{
    if(num)
        display(num-1);
    else
        return;

    printf(" %d ", num);
}  

The output of the above c program; as follows:

Please Enter any Integer Value  : 10
Natural Numbers from 1 To 10 are: 1  2  3  4  5  6  7  8  9  10 

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