CArrays - Real-Life Examples
Real-Life Example
To demonstrate a practical example of using arrays, let's create a program that calculates the average of different ages:
Example
// 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
for (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);
Try it Yourself »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
for (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);
And in this example, we create a program that finds the lowest age among different ages:
Example
// An array storing different ages
int ages[] = {20, 22, 18, 35, 48, 26, 87, 70};
int i;
// Get the length of the array
int length = sizeof(ages) / sizeof(ages[0]);
// Create a 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 (i = 0; i < length; i++) {
if (lowestAge > ages[i]) {
lowestAge = ages[i];
}
}
Try it Yourself »int ages[] = {20, 22, 18, 35, 48, 26, 87, 70};
int i;
// Get the length of the array
int length = sizeof(ages) / sizeof(ages[0]);
// Create a 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 (i = 0; i < length; i++) {
if (lowestAge > ages[i]) {
lowestAge = ages[i];
}
}
In this example, we go through a list of numbers. We skip negative values, but stop the loop completely if we find a zero:
Example
int myNumbers[] = {3, -1, 7, 0, 9};int length = sizeof(myNumbers) / sizeof(myNumbers[0]);int i;for (i = 0; i < length; i++) { if (myNumbers[i] < 0) { continue; // skip negative numbers } if (myNumbers[i] == 0) { break; // stop loop when zero is found } printf("%d\n", myNumbers[i]);}
