Compilare: user.cpp: In function ‘int main()’: user.cpp:84:9: warning: variable ‘m’ set but not used [-Wunused-but-set-variable] int m, n, q, h, l, i, p, l1, l2, c1, c2, x; ^ user.cpp:84:27: warning: unused variable ‘p’ [-Wunused-variable] int m, n, q, h, l, i, p, l1, l2, c1, c2, x; ^ user.cpp: In function ‘char nextch()’: user.cpp:22:37: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf, BUF_SIZE, 1, fin); ^ user.cpp: In function ‘int main()’: user.cpp:134:81: warning: ‘sol.mycreation::b’ is used uninitialized in this function [-Wuninitialized] fprintf(fout, "%lld\n%d %d %d %d\n", sol.min, sol.a, sol.b, sol.a+h, sol.b+l); ^ user.cpp:134:81: warning: ‘sol.mycreation::a’ is used uninitialized in this function [-Wuninitialized]