Compilare: user.cpp: In function ‘int main()’: user.cpp:33:45: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘short int*’ [-Wformat=] fscanf(fin, "%d", &mat[i][j].val); ^ user.cpp:30:60: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d%d%d%d", &n, &m, &sx, &sy, &fx, &fy); ^ user.cpp:33:46: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &mat[i][j].val); ^