Arrays in C

Fixed-size arrays: initializing and iterating.

int sum_array(void) {
    int scores[5] = {90, 82, 77, 95, 88};
    int total = 0;
    for (int i = 0; i < 5; i++)
        total += scores[i];

    int doubled[5];
    for (int i = 0; i < 5; i++)
        doubled[i] = scores[i] * 2;
    return total + doubled[0];
}

How it works

1. A braced initializer fills the array.
2. One loop sums it; another fills a second array.
3. Indexing with [i] reads and writes elements.

Keywords and builtins used here

• for
• int
• return
• sum_array
• void

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Type this snippet

Step 1 of 5 in Arrays & strings, step 22 of 35 in Language basics.

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Arrays in other languages

• Rust