Compilare: main.cpp: In function 'double ruta(int, int)': main.cpp:37:12: warning: variable 'vn' set but not used [-Wunused-but-set-variable] double vn[7]={0.0,0.0,0.0,0.0,0.0,0.0,0.0}; ^~ main.cpp: In function 'int main()': main.cpp:131:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("elicoptere.in","r",stdin); ^ main.cpp:132:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("elicoptere.out","w",stdout); ^ main.cpp:133:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%lf",&q,&n,&k); ^ main.cpp:135:96: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d",&v[i].x[1],&v[i].y[1],&v[i].x[2],&v[i].y[2],&v[i].x[3],&v[i].y[3]); ^