How to Iterate Over an Array in Reverse Order in C - Step by Step Examples

How to Iterate Over an Array in Reverse Order in C ?

Answer

To iterate over an array in C in reverse order, you can use a for loop starting from the last index to the first index.

✐ Examples

1 Iterate Over Integer Array in Reverse with for Loop

In this example,

We create an integer array named numbers with some values.
We use a for loop starting from the last index to iterate over each element of the array in reverse order.

C Program

#include <stdio.h>

int main() {
    int numbers[] = {1, 2, 3, 4, 5};
    int n = sizeof(numbers) / sizeof(numbers[0]);
    for (int i = n - 1; i >= 0; i--) {
        printf("%d\n", numbers[i]);
    }
    return 0;
}

Output

2 Iterate Over Character Array in Reverse with for Loop

In this example,

We create a character array named characters with some values.
We use a for loop starting from the last index to iterate over each character of the array in reverse order.

C Program

#include <stdio.h>
#include <string.h>

int main() {
    char characters[] = "Hello";
    int n = strlen(characters);
    for (int i = n - 1; i >= 0; i--) {
        printf("%c\n", characters[i]);
    }
    return 0;
}

Output

o
l
l
e
H

Summary

In this tutorial, we learned How to Iterate Over an Array in Reverse Order in C language with well detailed examples.

◀ Previous Next ▶