Compilare: user.cpp: In function ‘int main()’: user.cpp:18:26: warning: unused variable ‘rez’ [-Wunused-variable] int n, t, x, y, lat, rez, col1, col2; ^ user.cpp:18:31: warning: unused variable ‘col1’ [-Wunused-variable] int n, t, x, y, lat, rez, col1, col2; ^ user.cpp:18:37: warning: unused variable ‘col2’ [-Wunused-variable] int n, t, x, y, lat, rez, col1, col2; ^ user.cpp:20:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &t); ^ user.cpp:23:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &mat[i][j]); ^ user.cpp:42:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &x, &y, &lat); ^