Compilare: main.cpp: In function 'void Back(long int, long int)': main.cpp:21:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(long j=0;j<Muchii[nodCurent].size();j++) ~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'long int FindLca(long int, long int)': main.cpp:35:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(long i=0;i<euler.size();i++) ~^~~~~~~~~~~~~ main.cpp:40:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(euler[j].first!=y&&j<euler.size()) ~^~~~~~~~~~~~~ main.cpp:49:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j<euler.size()) ~^~~~~~~~~~~~~ main.cpp: In function 'void read()': main.cpp:11:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld%ld",&n,&nrp); ^ main.cpp:14:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] long j;fscanf(f,"%ld",&j); ^ main.cpp: In function 'long int FindLca(long int, long int)': main.cpp:56:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.cpp: In function 'void Rez()': main.cpp:62:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld%ld",&x,&y); ^ main.cpp: In function 'long int FindLca(long int, long int)': main.cpp:51:24: warning: 'tataComun' may be used uninitialized in this function [-Wmaybe-uninitialized] return tataComun; ^~~~~~~~~