Compilare: user.cpp: In function ‘int main()’: user.cpp:151:39: 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); ^ user.cpp:152:41: 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); ^ user.cpp:154:55: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&typeQuery , &noTri , & distMax ); ^ user.cpp:160:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf", &crPct.x , &crPct.y); ^ user.cpp:163:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf", &crPct.x , &crPct.y); ^ user.cpp:166:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf", &crPct.x , &crPct.y); ^ user.cpp: In function ‘double calcDist(Punct, Punct, Punct)’: user.cpp:34:46: warning: ‘xCord’ may be used uninitialized in this function [-Wmaybe-uninitialized] double crDist = ( p1.x - p2.x ) * ( p1.x - p2.x ) + ( p2.y - p1.y )* ( p2.y - p1.y ); ^ user.cpp:68:16: note: ‘xCord’ was declared here double xCord ; ^ user.cpp:34:81: warning: ‘yCord’ may be used uninitialized in this function [-Wmaybe-uninitialized] double crDist = ( p1.x - p2.x ) * ( p1.x - p2.x ) + ( p2.y - p1.y )* ( p2.y - p1.y ); ^ user.cpp:52:16: note: ‘yCord’ was declared here double yCord ; ^