Compilare: user.cpp: In function ‘int main()’: user.cpp:116:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:121:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf", &x0, &y0); ^ user.cpp:122:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf", &x1, &y1); ^ user.cpp:123:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &cost); ^ user.cpp:128:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf%lf", &x0, &y0, &r); ^ user.cpp: In function ‘void Intersect(Circle, Target)’: user.cpp:86:39: warning: ‘d’ may be used uninitialized in this function [-Wmaybe-uninitialized] tx = tx.plus(ty); tx = tx.plus(cr); ^ user.cpp:86:21: warning: ‘d’ may be used uninitialized in this function [-Wmaybe-uninitialized] tx = tx.plus(ty); tx = tx.plus(cr); ^ user.cpp:85:47: warning: ‘d’ may be used uninitialized in this function [-Wmaybe-uninitialized] tx = tx.multiply(tx); ty = ty.multiply(ty); ^ user.cpp:85:25: warning: ‘d’ may be used uninitialized in this function [-Wmaybe-uninitialized] tx = tx.multiply(tx); ty = ty.multiply(ty); ^