Compilare: user.cpp: In function ‘int unite(int, int)’: user.cpp:45:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘void solveTest()’: user.cpp:50:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:54:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &xx[i], &yy[i]); ^ user.cpp: In function ‘int main()’: user.cpp:121:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zapezi2.in", "r", stdin); ^ user.cpp:122:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zapezi2.out", "w", stdout); ^ user.cpp:125:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^