#include <stdio.h> // Include the standard input-output library
int main() // Change void main() to int main()
{
int array[10]; // Declare an array of size 10
int i; // Declare the loop variable
printf("Enter the elements of the array:\n");
// Loop to read 10 integers from user input
for (i = 0; i < 10; i++) {
scanf("%d", &array[i]); // Store each integer in the array
}
printf("Alternate elements of the given array:\n");
// Loop to print every alternate element from the array
for (i = 0; i < 10; i += 2) {
printf("%d\n", array[i]); // Print the element at index i
}
return 0; // Return 0 to indicate successful execution
}
Code Explanation
Include Standard Library:
- This line includes the standard input-output library necessary for functions like
printfandscanf.
- This line includes the standard input-output library necessary for functions like
Main Function:
- Defines the main function where the program execution begins. It’s standard practice to declare the return type as
int.
- Defines the main function where the program execution begins. It’s standard practice to declare the return type as
Array Declaration:
- An integer array named
arrayof size 10 is declared to hold 10 integers.
- An integer array named
Variable Declaration:
- A single integer variable
iis declared to be used as a loop counter.
- A single integer variable
Prompt for User Input:printf("Enter the elements of the array:\n");- This line prints a message asking the user to enter the elements of the array
Input Loop:
- A
forloop runs from0to9, allowing the user to input 10 integers. Each integer is stored in thearrayat indexi. Thescanffunction is used to read the input.
- A
Print Alternate Elements Prompt:
- This line informs the user that the program will now print alternate elements from the array
Alternate Elements Loop:
- Another
forloop runs from0to9, but incrementsiby2each time. This means the loop will access every second element of the array. Theprintffunction prints each of these alternate elements on a new line
- Another
Return Statement:
- Indicates that the program has executed successfully. Returning
0is a convention to signal successful termination.
- Indicates that the program has executed successfully. Returning
Example Input/Output
- Input: If the user enters:
10 20 30 40 50 60 70 80 90 100 - Output:
