Compilare: user.cpp: In function ‘int main()’: user.cpp:36:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < l[s].size(); i++) ^ user.cpp:14:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d ",&t); ^ user.cpp:19:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d %d",&n,&m, &s); ^ user.cpp:22:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d ", &d); ^ user.cpp:28:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d %d",&a,&b,&c ); ^ user.cpp:36:42: warning: ‘h’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(int i = 0; i < l[s].size(); i++) ^