Compilare: user.cpp: In function ‘int main()’: user.cpp:53:10: warning: statement has no effect [-Wunused-value] for(t; t>0; t--){ ^ user.cpp:49:15: warning: variable ‘m’ set but not used [-Wunused-but-set-variable] int t, n, m, i, j, k; ^ user.cpp:49:24: warning: unused variable ‘k’ [-Wunused-variable] int t, n, m, i, j, k; ^ user.cpp: In function ‘void avans()’: user.cpp:15:26: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(s, 1, LIM, fin); ^