Compilare: user.cpp: In function ‘void adaugare_coada()’: user.cpp:60:31: warning: unused variable ‘cate’ [-Wunused-variable] int sum = 0 , cate = 0 ; ^ user.cpp: In function ‘void citire()’: user.cpp:24:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d %d %d" , &n , &m , &k ) ; ^ user.cpp:26:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%s" , s[i] + 1 ) ; ^ user.cpp: In function ‘int main()’: user.cpp:128:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "zone2.in" , "r" , stdin ) ; ^ user.cpp:129:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "zone2.out" , "w" , stdout ) ; ^