Compilare: user.cpp: In function ‘int main()’: user.cpp:26:24: warning: format ‘%c’ expects a matching ‘char*’ argument [-Wformat=] fscanf(fin,"%c"); ^ user.cpp:14:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &t); ^ user.cpp:25:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &l); ^ user.cpp:26:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%c"); ^ user.cpp:27:30: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets (c, MAXX , fin); ^ user.cpp:19:26: warning: iteration 100001u invokes undefined behavior [-Waggressive-loop-optimizations] nrpasi[i] = 0; ^ user.cpp:17:9: note: containing loop for(int i=0;i<=MAXX+1;i++) ^