Compilare: main.cpp: In function 'void solve()': main.cpp:111:15: warning: unused variable 'p' [-Wunused-variable] int c1,c2,p,cate=1; ^ main.cpp: In function 'void read()': main.cpp:38:70: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d %d %d %d %d",&coorx,&coory,&gx,&gy,&dx,&dy,&n); ^ main.cpp:41:45: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&v[i].p1, &v[i].p2); ^ main.cpp:45:22: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&m); ^ main.cpp:48:47: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&v2[i].p1, &v2[i].p2); ^