Eroare de compilare: user.cpp:40:7: error: expected constructor, destructor, or type conversion before ‘(’ token printf("\n"); ^ user.cpp:41:1: error: expected unqualified-id before ‘if’ if(negative == true) { ^ user.cpp:44:1: error: expected unqualified-id before ‘else’ else { ^ user.cpp: In function ‘void read_data(int&, int&)’: user.cpp:31:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:34:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &x, &y, &cost); ^