Static Variable

Created: 2022-08-19
Tags: #fleeting

void printNum() {
    static int num = 0
    printf("%i\n", num++);
}

int main() {
    printNum();  // 1
    printNum();  // 2
    printNum();  // 3
}
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When calling a function,
static variable makes the initialization of its value only once.
When printNum() is called again, it will never initialize the value of num to 0 again ...
... and will still have the same value as before, which is 1

void printNum() {
    int num = 0
    printf("%i\n", num++);
}

int main() {
    printNum();  // 1
    printNum();  // 1
    printNum();  // 1
}
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Local Variables are by default -> Automatic Variables
When calling the function, it will always initialize any variable to its expression.