Compilare: user.cpp: In function ‘int main()’: user.cpp:14:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,p,ap,s,ss=0,n,m,st,dr,k,w; ^ user.cpp:17:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&m); ^ user.cpp:22:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&st,&dr,&k); ^ user.cpp:44:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&st,&dr,&k); ^