Program: Array

1. Basic Array Initialization and Traversal

#include <stdio.h>

int main() {
    int arr[5] = {10, 20, 30, 40, 50}; // Initialization of array
    
    // Traversing and printing array elements
    printf("Array elements:\n");
    for(int i = 0; i < 5; i++) {
        printf("%d ", arr[i]);
    }

    return 0;
}

2. Sum of All Elements in an Array

This program calculates the sum of all the elements in an array.

#include <stdio.h>

int main() {
    int arr[6] = {5, 8, 12, 3, 7, 10};
    int sum = 0;
    
    // Calculate sum
    for(int i = 0; i < 6; i++) {
        sum += arr[i];
    }
    
    printf("Sum of array elements: %d\n", sum);
    
    return 0;
}

3. Find Maximum and Minimum Element in an Array

#include <stdio.h>

int main() {
    int arr[6] = {12, 5, 7, 89, 34, 21};
    int max = arr[0];
    int min = arr[0];
    
    for(int i = 1; i < 6; i++) {
        if(arr[i] > max) {
            max = arr[i];
        }
        if(arr[i] < min) {
            min = arr[i];
        }
    }
    
    printf("Maximum: %d\n", max);
    printf("Minimum: %d\n", min);
    
    return 0;
}

4. Reversing an Array

This program reverses the elements of an array.

#include <stdio.h>

int main() {
    int arr[5] = {10, 20, 30, 40, 50};
    int temp;

    // Reversing the array
    for(int i = 0; i < 5 / 2; i++) {
        temp = arr[i];
        arr[i] = arr[5 - i - 1];
        arr[5 - i - 1] = temp;
    }

    printf("Reversed array:\n");
    for(int i = 0; i < 5; i++) {
        printf("%d ", arr[i]);
    }

    return 0;
}

5. Sorting an Array in Ascending Order

#include <stdio.h>

int main() {
    int arr[5] = {64, 34, 25, 12, 22};
    int n = 5, temp;
    
    // Bubble sort algorithm
    for(int i = 0; i < n-1; i++) {
        for(int j = 0; j < n-i-1; j++) {
            if(arr[j] > arr[j+1]) {
                temp = arr[j];
                arr[j] = arr[j+1];
                arr[j+1] = temp;
            }
        }
    }
    
    printf("Sorted array: \n");
    for(int i = 0; i < n; i++) {
        printf("%d ", arr[i]);
    }
    
    return 0;
}

Programs to Practice

• Create an array to store and print student grades.
• Write a program to find the largest number in an array.
• Implement a program that takes user input to fill an array and then displays it.
• Array Input and Output: Write a program to take input for an array from the user and print the array elements.
• Array Sum and Average: Calculate the sum and average of the elements in an array.
• Find Largest and Smallest Element: Find the maximum and minimum element in an array.
• Count Even and Odd Numbers: Write a program to count the number of even and odd elements in an array.
• Linear Search: Implement a linear search algorithm to find a given element in an array.