Compilare: user.cpp: In function ‘int main()’: user.cpp:35:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("iepuri.in","r",stdin); ^ user.cpp:36:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("iepuri.out","w",stdout); ^ user.cpp:37:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^ user.cpp:40:53: 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",&x,&y,&z,&m,&w,&r,&k); ^ user.cpp: In function ‘void multiply(long long int (*)[4], long long int (*)[4])’: user.cpp:11:15: warning: array subscript is above array bounds [-Warray-bounds] c[i][j]=0; ^ user.cpp:11:15: warning: array subscript is above array bounds [-Warray-bounds] user.cpp:11:12: warning: array subscript is above array bounds [-Warray-bounds] c[i][j]=0; ^ user.cpp:11:12: warning: array subscript is above array bounds [-Warray-bounds] user.cpp:11:15: warning: array subscript is above array bounds [-Warray-bounds] c[i][j]=0; ^ user.cpp:11:12: warning: array subscript is above array bounds [-Warray-bounds] c[i][j]=0; ^