Counting

Counting is a fundamental concept in programming that involves iterating over a sequence of elements and performing operations on each element. In the context of counting up to a certain number, it simply means displaying each number from 1 up to a given number $n$.

Objective :

The objective is to count from 1 up to a specified number $n$ and display each number.

Steps

1. Input: Get the number $n$ up to which we need to count.
2. Loop: Use a loop to iterate from 1 to $n$.
3. Output: Print each number during each iteration of the loop.

Algorithm in Pseudo-Code

C Implementation

Here’s a simple C program to count from 1 to a user-specified number $n$.

Explanation of the C Program

1. Include Standard I/O Library:
   • #include <stdio.h>: This line includes the standard input-output library needed for functions like printf and scanf.
2. Main Function:
   • int main(): The main function is the entry point of the program.
3. Variable Declaration:
   • int n;: This declares an integer variable n that will hold the number up to which we need to count.
4. Input from User:
   • printf(“Enter the number up to which to count: “);: This line prompts the user to enter a number.
   • scanf(“%d”, &n);: This line reads the integer input from the user and stores it in the variable n.
5. For Loop for Counting:
   • for (int i = 1; i <= n; i++): This loop starts with i initialized to 1 and increments i by 1 in each iteration until i is greater than n.
   • printf(“%d\n”, i);: Inside the loop, this line prints the current value of i followed by a newline.
6. Return Statement:
   • return 0;: This indicates that the program finished successfully.

Sample Output

If the user inputs 5, the program will output: