Compilare: main.cpp: In function 'int main()': main.cpp:53:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (ind != ans.size() - 1) ans[ind + 1] = (char)s + '0' - ans[ind] + '0'; ~~~~^~~~~~~~~~~~~~~~~ main.cpp:11:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ main.cpp:14:55: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for (i = 0; i < n; i++) fscanf(fin, "%d", &Arr[i]); ^