Compilare: user.cpp: In function ‘int main()’: user.cpp:14:25: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘int’ [-Wformat=] fscanf(f,"%d",a[i][j]); ^ user.cpp:9:19: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&m); ^ user.cpp:11:19: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.cpp:14:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",a[i][j]); ^