C Exercises: Display first 10 natural numbers
C For Loop: Exercise-1 with Solution
Write a program in C to display the first 10 natural numbers.
This C program demonstrates how to display the first 10 natural numbers. It uses a simple “for” loop to iterate from 1 to 10 and prints each number sequentially to the console. This basic program is an excellent introduction to loops and output in C.
Visual Presentation:
Sample Solution:
C Code:
#include <stdio.h> // Include the standard input/output header file.
void main() {
int i; // Declare a variable 'i' for the loop counter.
printf("The first 10 natural numbers are:\n"); // Print a message to indicate the output.
for (i=1; i<=10; i++) // Start a for loop to iterate from 1 to 10.
{
printf("%d ", i); // Print the current value of 'i'.
}
printf("\n"); // Print a new line for better formatting.
}
Output:
The first 10 natural numbers are: 1 2 3 4 5 6 7 8 9 10
Explanation:
for (i = 1; i <= 10; i++) {
printf("%d ", i);
}
In the above for loop, the variable i is initialized to 1, and the loop will continue as long as i is less than or equal to 10. In each iteration of the loop, the printf function will print the value of i to the console, followed by a space character.
Finally, the loop will increment the value of i by 1, and the process will repeat until the condition i<=10 is no longer true.
So, when this code runs, it will output the numbers 1 through 10 separated by spaces.
Flowchart:
Step wise execution of C program :
- Green color means line that has just executed
- Red color means next line to excute
- Stack : a stack is an abstract data type that serves as a collection of elements.
| Steps | Code | Stack | Output |
|---|---|---|---|
| Step-1 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main |
|
| Step-2 | 1 int main(){ 2 int i; 3 printf("The first 10 natural numbers are:\n"); 4 for (i=1;i<=10;i++) 5 { 6 printf("%d ",i); 7 } 8 printf("\n"); 9 return 0; 10 } |
main i(int): ? |
|
| Step-3 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): ? |
The first 10 natural numbers are: |
| Step-4 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 1 |
The first 10 natural numbers are: |
| Step-5 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 1 |
The first 10 natural numbers are: 1 |
| Step-6 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 2 |
The first 5 natural numbers are: 1 |
| Step-7 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 2 |
The first 5 natural numbers are: 1 2 |
| Step-8 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 3 |
The first 5 natural numbers are: 1 2 |
| Step-9 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 3 |
The first 5 natural numbers are: 1 2 3 |
| Step-10 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 4 |
The first 10 natural numbers are: 1 2 3 |
| Step-11 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 4 |
The first 10 natural numbers are: 1 2 3 4 |
| Step-12 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 5 |
The first 10 natural numbers are: 1 2 3 4 |
| Step-13 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 5 |
The first 10 natural numbers are: 1 2 3 4 5 |
| Step-14 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 6 |
The first 10 natural numbers are: 1 2 3 4 5 |
| Step-15 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 6 |
The first 10 natural numbers are: 1 2 3 4 5 6 |
| Step-16 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 7 |
The first 10 natural numbers are: 1 2 3 4 5 6 |
| Step-17 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 } |
main i(int): 7 |
The first 10 natural numbers are: 1 2 3 4 5 6 7 |
| Step-18 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 8 |
The first 10 natural numbers are: 1 2 3 4 5 6 7 |
| Step-19 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 8 |
The first 10 natural numbers are: 1 2 3 4 5 6 7 8 |
| Step-20 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 9 |
The first 10 natural numbers are: 1 2 3 4 5 6 7 8 |
| Step-21 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 9 |
The first 10 natural numbers are: 1 2 3 4 5 6 7 8 9 |
| Step-22 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 10 |
The first 10 natural numbers are: 1 2 3 4 5 6 7 8 9 |
| Step-23 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 10 |
The first 10 natural numbers are: 1 2 3 4 5 6 7 8 9 10 |
| Step-24 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 11 |
The first 10 natural numbers are: 1 2 3 4 5 6 7 8 9 10 |
| Step-25 |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 11 |
The first 10 natural numbers are: 1 2 3 4 5 6 7 8 9 10 |
| Exit |
1 int main(){
2 int i;
3 printf("The first 10 natural numbers are:\n");
4 for (i=1;i<=10;i++)
5 {
6 printf("%d ",i);
7 }
8 printf("\n");
9 return 0;
10 }
|
main i(int): 11 |
The first 10 natural numbers are: 1 2 3 4 5 6 7 8 9 10 |
C Programming Code Editor:
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