Compilare: user.cpp: In function ‘bool del(int)’: user.cpp:70:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘void numar()’: user.cpp:75:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < t.size(); i ++) { ^ user.cpp: In function ‘int main()’: user.cpp:92:29: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[305]’ [-Wformat=] fscanf(f, "%s\n", &v); ^ user.cpp:100:29: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[305]’ [-Wformat=] fscanf(f, "%s\n", &v); ^ user.cpp:89:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d\n", &n); x = n; ^ user.cpp:92:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s\n", &v); ^ user.cpp:98:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d\n", &n); ^ user.cpp:100:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s\n", &v); ^