Compilare: user.c: In function ‘main’: user.c:72:3: warning: format ‘%F’ expects argument of type ‘float *’, but argument 2 has type ‘int *’ [-Wformat=] scanf("%Fd%Fd", xy[i], xy[i] + 1); ^ user.c:72:3: warning: format ‘%F’ expects argument of type ‘float *’, but argument 3 has type ‘int *’ [-Wformat=] user.c:69:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("banana.in", "r", stdin); ^ user.c:70:7: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &k); ^ user.c:72:8: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%Fd%Fd", xy[i], xy[i] + 1); ^