In the world of programming & coding, the creation and manipulation of sequences play a fundamental role in algorithmic understanding. The 1 2 3 4 series is a sequence pattern that involves generating numbers in a specific order: 1, 2, 3, 4, 5, 6 and so forth. This pattern is a fascinating concept and holds significance in various programming applications.

**Concept of the 1 2 3 4 Series**

The series 1, 2, 3, 4,… represents a sequence of natural numbers starting from 1 and incrementing by 1 continuously. This progression forms the core logic of our program.

**1 2 3 4 Series Implementation in C**

Let’s write a simple C program to generate the 1 2 3 4 series:

```
#include <stdio.h>
void main() {
int n, i;
printf("Enter the maximum number: ");
scanf("%d", &n);
for (i = 1; i <= n; i++) {
printf("%d ", i);
}
}
```

**Output**

**How the Above C Program Works for 1234 Series**

- We declare a variable (
`i`

) to represent the current number in the series. - We initialize
`i`

to 1 (the starting number). - We set a loop condition based on the desired ending point (say,
`n`

). - Inside the loop body, we print the current value of
`i`

. - After printing, we increment
`i`

by 1 to move to the next number in the series. - The loop iterates until the stopping condition is met, resulting in the desired sequence.

This program serves as a foundation for exploring more complex concepts. We can modify it to –

- Print the series in reverse order.
- Calculate and print the sum of the series.
- Generate different sequences with varying increments or starting points.