Compilare: user.cpp: In function ‘int main()’: user.cpp:14:9: warning: unused variable ‘a’ [-Wunused-variable] int a,b,c,d1,d2,d3,s; ^ user.cpp:14:11: warning: unused variable ‘b’ [-Wunused-variable] int a,b,c,d1,d2,d3,s; ^ user.cpp:14:13: warning: unused variable ‘c’ [-Wunused-variable] int a,b,c,d1,d2,d3,s; ^ user.cpp:14:15: warning: unused variable ‘d1’ [-Wunused-variable] int a,b,c,d1,d2,d3,s; ^ user.cpp:14:18: warning: unused variable ‘d2’ [-Wunused-variable] int a,b,c,d1,d2,d3,s; ^ user.cpp:14:21: warning: unused variable ‘d3’ [-Wunused-variable] int a,b,c,d1,d2,d3,s; ^ user.cpp:14:24: warning: unused variable ‘s’ [-Wunused-variable] int a,b,c,d1,d2,d3,s; ^ user.cpp:11:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("qtri.in","r",stdin); ^ user.cpp:12:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("qtri.out","w",stdout); ^ user.cpp:15:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&q); ^ user.cpp:18:66: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d%d%d",&a1,&a2,&b1,&b2,&c1,&c2,&x1,&x2); ^