How to assign values to arrays in the C language?

In the C language, there are two methods to assign values to an array:

1. Assign values one by one: assigning values to each element of the array through a loop.

#include <stdio.h>

int main() {
    int arr[5];
    int i;

    for (i = 0; i < 5; i++) {
        arr[i] = i + 1;
    }

    for (i = 0; i < 5; i++) {
        printf("%d ", arr[i]);
    }

    return 0;
}

The output is:

1 2 3 4 5

1. Use curly braces initialization: when declaring an array, use curly braces to initialize the array’s elements.

#include <stdio.h>

int main() {
    int arr[5] = {1, 2, 3, 4, 5};
    int i;
    
    for (i = 0; i < 5; i++) {
        printf("%d ", arr[i]);
    }

    return 0;
}

The output is:

1 2 3 4 5