Compilare: user.cpp: In function ‘int main()’: user.cpp:17:25: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(S,lMax - 1,in); ^ user.cpp:20:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d\n", &n); ^ user.cpp:24:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%c", &x); ^ user.cpp: In function ‘char nott()’: user.cpp:55:22: warning: ‘rez’ may be used uninitialized in this function [-Wmaybe-uninitialized] rez=semn==1?rez:!rez; ^