Compilare: user.cpp: In function ‘int main()’: user.cpp:43:13: warning: unused variable ‘i1’ [-Wunused-variable] int i0, i1, i2, x, y, x1, y1, x2, y2, rez1 = 0; ^ user.cpp:43:17: warning: unused variable ‘i2’ [-Wunused-variable] int i0, i1, i2, x, y, x1, y1, x2, y2, rez1 = 0; ^ user.cpp:43:21: warning: unused variable ‘x’ [-Wunused-variable] int i0, i1, i2, x, y, x1, y1, x2, y2, rez1 = 0; ^ user.cpp:43:24: warning: unused variable ‘y’ [-Wunused-variable] int i0, i1, i2, x, y, x1, y1, x2, y2, rez1 = 0; ^ user.cpp:40:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("plaja.in", "r", stdin); ^ user.cpp:41:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("plaja.out", "w", stdout); ^ user.cpp:45:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &a, &b, &u); ^ user.cpp:49:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &umb[i0].x, &umb[i0].y); ^ user.cpp:54:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:58:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d", &x1, &y1, &x2, &y2); ^