Compilare: user.cpp: In function ‘int main()’: user.cpp:55:43: warning: unused variable ‘k’ [-Wunused-variable] int n,m,x1,y1,x2,y2,ox,oy,i,aux,dx,dy,k,j; ^ user.cpp:57:15: warning: unused variable ‘fact’ [-Wunused-variable] long long fact,fact1,fact2,nrd=1; ^ user.cpp:57:20: warning: unused variable ‘fact1’ [-Wunused-variable] long long fact,fact1,fact2,nrd=1; ^ user.cpp:57:26: warning: unused variable ‘fact2’ [-Wunused-variable] long long fact,fact1,fact2,nrd=1; ^ user.cpp:58:52: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d%d%d%d%d",&n,&m,&x1,&y1,&x2,&y2); ^ user.cpp:59:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&ox); ^ user.cpp:62:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&x[i].st,&x[i].dr); ^ user.cpp:70:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&oy); ^ user.cpp:73:46: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&y[i].jos,&y[i].sus); ^