Compilare: user.cpp: In function ‘int main()’: user.cpp:51:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d",&n,&m,&q); ^ user.cpp:53:43: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&v[i].x,&v[i].y); ^ user.cpp:68:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&a,&b); ^ user.cpp: In function ‘int cautbin(int)’: user.cpp:33:12: warning: ‘elem’ may be used uninitialized in this function [-Wmaybe-uninitialized] return elem; ^ user.cpp: In function ‘int main()’: user.cpp:44:48: warning: ‘elem’ may be used uninitialized in this function [-Wmaybe-uninitialized] return rasp=rasp+(1<<i)+stramos(d[b][i-1],b); ^ user.cpp:20:23: note: ‘elem’ was declared here int st=1,dr=m,mij,elem; ^ user.cpp:75:19: warning: ‘elem’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(v[st+1].y<=a) ^