In this program, we will learn how to print natural numbers from 1 to N using C Programming language.
We will use following approaches to print the natural numbers from 1 to N:
- Using For Loop
- Using While Loop
- In a Range
So, without further ado, let’s begin this tutorial.
C Program to Print Natural Numbers From 1 to N Using For Loop
// C Program to Print Natural Numbers From 1 to N
#include <stdio.h>
int main(){
int num;
// Asking for input
printf("Enter a number: ");
scanf("%d", &num);
printf("Natural numbers from 1 to %d are: \n", num);
for (int i = 1; i <= num; i++){
printf("%d \n", i);
}
return 0;
}
Output
Enter a number: 15
Natural numbers from 1 to 15 are:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
How Does This Program Work ?
int num;
In the above program, we have declared one integer data type variable named num.
// Asking for input
printf("Enter a number: ");
scanf("%d", &num);
Now, the user is asked to enter a positive number. This number gets stored in the num named variable.
printf("Natural numbers from 1 to %d are: \n", num);
for (int i = 1; i <= num; i++){
printf("%d \n", i);
}
Then, we print all numbers lying between 1 to num using a for loop.
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 i = 1, num;
// Asking for input
printf("Enter a positive number: ");
scanf("%d", &num);
printf("Natural numbers from 1 to %d are: \n");
while (i <= num){
printf("%d \n", i);
i++;
}
return 0;
}
Output
Enter a positive number: 5
Natural numbers from 1 to 0 are:
1
2
3
4
5
C Program to Print Natural Numbers in a Range
// C Program to Print Natural Numbers in a Range
#include <stdio.h>
int main(){
int i, min, max;
// Asking for input
printf("Enter the minimum value: ");
scanf("%d", &min);
printf("Enter the maximum value: ");
scanf("%d", &max);
printf("Natural numbers lying in range %d to %d are: \n", min, max);
for (i = min; i <= max; i++){
printf("%d \n", i);
}
return 0;
}
Output
Enter the minimum value: 63
Enter the maximum value: 70
Natural numbers lying in range 63 to 70 are:
63
64
65
66
67
68
69
70
Conclusion
I hope after going through this post, you understand how to print natural numbers from 1 to N using C Programming language.
If you have any doubt regarding the program, then contact us in the comment section. We will be delighted to assist you.
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