Compilare: user.cpp: In function ‘void dinamik()’: user.cpp:9:8: warning: unused variable ‘j’ [-Wunused-variable] int i,j,x,y; ^ user.cpp:9:10: warning: unused variable ‘x’ [-Wunused-variable] int i,j,x,y; ^ user.cpp:9:12: warning: unused variable ‘y’ [-Wunused-variable] int i,j,x,y; ^ user.cpp: In function ‘int main()’: user.cpp:44:16: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(in); ^ user.cpp:45:17: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(out); ^ user.cpp:46:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&k); ^ user.cpp:49:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a[i][j]); ^