Compilare: user.cpp: In function ‘int main()’: user.cpp:10:9: warning: unused variable ‘v’ [-Wunused-variable] int v[1000] , q , a , b , c ,d = 0 ; ^ user.cpp:10:34: warning: unused variable ‘d’ [-Wunused-variable] int v[1000] , q , a , b , c ,d = 0 ; ^ user.cpp:8:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("ecu2.in" , "r" ,stdin ); ^ user.cpp:9:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("ecu2.out" , "w" ,stdout ); ^ user.cpp:11:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d\n" , &q ); ^ user.cpp:14:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d %d \n" , &a , &b , &c); ^