Compilare: user.cpp: In function ‘int main()’: user.cpp:19:21: warning: format ‘%f’ expects argument of type ‘float*’, but argument 2 has type ‘double*’ [-Wformat=] scanf("%f",&size); ^ user.cpp:24:38: warning: format ‘%f’ expects argument of type ‘float*’, but argument 2 has type ‘double*’ [-Wformat=] scanf("%f",&matrix[i][j]); ^ user.cpp:12:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bujor.in","r",stdin); ^ user.cpp:13:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bujor.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",&T); ^ user.cpp:19:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%f",&size); ^ user.cpp:24:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%f",&matrix[i][j]); ^