#include <stdio.h>
#include <stdlib.h>

struct Point {
    int x;
    int y;
};

struct Rectangle {
    struct Point upper_left;
    struct Point lower_right;
};

int main(int argc, char* argv[]) {
    struct Rectangle rect = { .upper_left  = { .x = 5, .y = 6 },
                              .lower_right = { .x = 0, .y = 1 }  };

    printf("Upper left:  %d, %d\n", rect.upper_left.x,  rect.upper_left.y);
    printf("Lower right: %d, %d\n", rect.lower_right.x, rect.lower_right.y);

    return EXIT_SUCCESS;
}
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