Compilare: user.cpp: In function ‘void citeste()’: user.cpp:24:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<graf[a].size();j++) ^ user.cpp: In function ‘void sorttop(int)’: user.cpp:48:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<graf[x].size();i++) ^ user.cpp: In function ‘int calc(int)’: user.cpp:58:28: 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:16:28: 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:18:30: 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:21:32: 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:69:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d",&t); ^