Compilare: main.cpp: In function 'int main()': main.cpp:34:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for (int j = 1; j <= n; j++) cout << a[i][j] << ' '; cout << "\n"; ^~~ main.cpp:34:62: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for (int j = 1; j <= n; j++) cout << a[i][j] << ' '; cout << "\n"; ^~~~ main.cpp:21:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("royfloyd.in", "r", stdin); ^ main.cpp:22:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("royfloyd.out", "w", stdout); ^