Compilare: user.cpp: In function ‘void citeste()’: user.cpp:22:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<graf[a].size();j++) ^ user.cpp: In function ‘int dfs(int)’: user.cpp:51:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<graf[x].size(); i++) ^ user.cpp: In function ‘void citeste()’: user.cpp:14:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d%d",&n,&m); ^ user.cpp:16:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d",&c[i]); ^ user.cpp:19:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d%d",&a,&b); ^ user.cpp: In function ‘int main()’: user.cpp:67:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d",&t); ^