How to express the range of a number in c language

In C language, the range operator ... is used to represent a range of numbers, which includes all integers within the range. For example, for (i = 10 ... 20) represents all integers from 10 to 20. Range operators can also be used with other data types, such as char and enumerations.

Representing a numerical range in C language

In C language, you can use the range operator. .. represents a range of numbers that includes all integers within the range. For example:

<code class="c">int i;
for (i = 10 ... 20) {
    // ...
}</code>

This range represents all integers from 10 to 20 (inclusive), that is, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20.

The range operator can also be used with other data types, such as characters and enumerations:

<code class="c">char c;
for (c = 'a' ... 'z') {
    // ...
}</code>

This range represents from 'a' to 'z' (including 'a' and 'z' ) all characters.

Example

<code class="c">int main() {
    int i;

    // 10 到 20
    for (i = 10 ... 20) {
        printf("%d ", i);
    }

    printf("\n");

    // 'a' 到 'z'
    char c;
    for (c = 'a' ... 'z') {
        printf("%c ", c);
    }

    printf("\n");

    return 0;
}</code>

Output result:

<code>10 11 12 13 14 15 16 17 18 19 20 
a b c d e f g h i j k l m n o p q r s t u v w x y z </code>

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