C Arrays - Real-Life Examples

Real-Life Example

An array is a collection of variables of the same data type, stored contiguously in memory. This means you can access each element of the array using an index that starts from 0 and goes up to the size of the array minus 1.

Example

#include <stdio.h>

int main() {

// An array storing different ages

int ages[] = {20, 22, 18, 35, 48, 26, 87, 70};

float avg, sum = 0;

int i;

// Get the length of the array

int length = sizeof(ages) / sizeof(ages[0]);

// Loop through the elements of the array and accumulate the sum

for (int i = 0; i < length; i++) {

sum += ages[i];

}

// Calculate the average by dividing the sum by the length

avg = sum / length;

// Print the average

printf("The average age is: %.2f", avg);

return 0;

Output

The average age is: 40.75

And in this C programm example, we create a program that finds the lowest age among different ages:

Example

#include <stdio.h>

int main() {

// An array storing different ages

p> int ages[] = {20, 22, 18, 35, 48, 26, 87, 70};

// Get the length of the array

int length = sizeof(ages) / sizeof(ages[0]);

// Create a 'lowest age' variable and assign the first array element of ages to it

int lowestAge = ages[0];

// Loop through the elements of the ages array to find the lowest age

for (int i = 0; i < length; i++) {

// Check if the current age is smaller than current the 'lowest age'

if (lowestAge > ages[i]) {

// If the smaller age is found, update 'lowest age' with that element

lowestAge = ages[i];

}

// Output the value of the lowest age

printf("The lowest age in the array is: %d", lowestAge);

return 0;