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#include <stdio.h>
#include <stdlib.h>
typedef enum {
STATUS_IDLE,
STATUS_RUNNING,
STATUS_STOPPED
} Status;
typedef struct {
int x;
int y;
} Point;
typedef struct {
Point top_left;
Point bottom_right;
} Rectangle;
typedef struct {
int q;
int w;
} Bar;
int add_numbers(int a, int b) {
int result = a + b;
return result;
}
int fibonacci(int n) {
if (n <= 1) return n;
return fibonacci(n - 1) + fibonacci(n - 2);
}
void print_rectangle(Rectangle rect) {
printf("> Rect: (%d, %d) to (%d, %d)\n",
rect.top_left.x, rect.top_left.y,
rect.bottom_right.x, rect.bottom_right.y);
}
int main(int argc, char **argv) {
const char *myenv = getenv("MYENV");
int a = 100;
int b = 123;
int c = add_numbers(a, b);
Bar bar = { .q = 565, .w = 949 };
Status status = STATUS_RUNNING;
Rectangle rect = {
.top_left = { .x = 10, .y = 20 },
.bottom_right = { .x = 50, .y = 80 }
};
printf("> MYENV: %s\n", myenv ? myenv : "NULL");
printf("> c: %d (via add_numbers)\n", c);
printf("> bar.q: %d\n", bar.q);
printf("> status: %d\n", status);
print_rectangle(rect);
int fib5 = fibonacci(5);
printf("> fib(5): %d\n", fib5);
int arr[] = {10, 20, 30, 40, 50};
int *ptr = arr;
for (int i = 0; i < 5; i++) {
printf("> arr[%d] = %d (via ptr: %d)\n", i, arr[i], *(ptr + i));
}
for (int i = 0; i < 3; i++) {
printf("> loop %d\n", i);
}
return 0;
}
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