Compilare: main.cpp: In function 'int Lee(int, int)': main.cpp:36:9: warning: unused variable 'i' [-Wunused-variable] int i,j,u,p,pasi = 1,k; ^ main.cpp:36:11: warning: unused variable 'j' [-Wunused-variable] int i,j,u,p,pasi = 1,k; ^ main.cpp: In function 'int main()': main.cpp:69:41: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d %d %d",&n,&m,&q,&t); ^ main.cpp:72:57: 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",&xs,&ys,&xf,&yf,&val); ^