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C program to display natural numbers from 1 to n
In this tutorial, we will discuss the C program to display natural numbers from 1 to n through different 5 ways
In this post, we are going to learn how to print natural number 1 to entered number in different 5 ways
C code to print natural numbers Using for loop
This program allows the user to enter a maximum number. and then, it displays the natural numbers from 1 to given number using for loop in C language
Program 1
#include <stdio.h>
#include <stdlib.h>
int main()
{
int num,i;
printf("Enter the Maximum number: \n");
scanf("%d",&num); //get input from user
printf("First %d Natural numbers are: \n",num);
for(i=1; i<=num; i++){
printf("%d",i);
printf(" ");
}
getch();
return 0;
}
When the above code is executed it produces the following output
Enter the maximum number for num: 20 First 20 Natural numbers are:: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 17 18 19 20
C code to print natural numbers Using while loop
This program allows the user to enter a maximum number. and then, it displays natural numbers from 1 to given number using while loop in C language
Program 2
#include <stdio.h>
#include <stdlib.h>
int main()
{
int num,i;
printf("Enter the Maximum number: \n");
scanf("%d",&num); //get input from user
printf("First %d Natural numbers are: \n",num);
i=1;
while(i<=num){
printf("%d",i);
printf(" ");
i++;
}
getch();
return 0;
}
When the above code is executed it produces the following output
Enter the maximum number: 24 First 24 Natural numbers are: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
C code to display natural numbers Using do-while loop
This program allows the user to enter a maximum number. and then, it displays natural numbers from 1 to given number using do while loop in C language
#include <stdio.h>
#include <stdlib.h>
int main()
{
int num,i;
printf("Enter the Maximum number: \n");
scanf("%d",&num); //get input from user
printf("First %d Natural numbers are: \n",num);
i=1;
do{
printf("%d",i);
printf(" ");
i++;
} while(i<=num);
getch();
return 0;
}
When the above code is executed it produces the following output
Enter the maximum number: 15 First 15 natural numbers are: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
C code to display natural numbers Using function
Program 4
This program allows the user to enter a maximum number. and then,it displays natural numbers from 1 to given number using the function in C language
#include <stdio.h>
#include <stdlib.h>
int naturalNum(int num);
int main()
{
int num;
printf("Enter the Maximum number: \n");
scanf("%d",&num); //get input from user
printf("First %d Natural numbers are: \n",num);
int result=naturalNum(num);
printf("%d",result);
getch();
return 0;
}
int naturalNum(int num){
int i;
for(i=1; i<num; i++){
printf("%d",i);
printf(" ");
}
}
When the above code is executed it produces the following output
Enter the Maximum number: 12 First 12 Natural numbers are: 1 2 3 4 5 6 7 8 9 10 11 12
C code to display natural numbers Using recursion
This program allows the user to enter a maximum number. and it displays natural numbers from 1 to given number using recursion in C language
Program 5
#include <stdio.h>
#include <stdlib.h>
int naturalNum(int lower_Limit, int upper_Limit);
int main()
{
int lower_Limit=1,upper_Limit;
printf("Enter the Maximum number: \n");
scanf("%d",&upper_Limit); //get input from user
printf("First %d Natural numbers are: \n",upper_Limit);
naturalNum(lower_Limit,upper_Limit);
getch();
return 0;
}
int naturalNum(int lower_Limit,int upper_Limit){
if(lower_Limit>upper_Limit)
return;
printf("%d",lower_Limit);
printf(" ");
naturalNum(lower_Limit+1,upper_Limit);
}
When the above code is executed it produces the following output
Enter the naximum number: 12 First 12 Natural numbers are: 1 2 3 4 5 7 8 9 10 11 12
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