Compilare: main.cpp: In function 'int main()': main.cpp:17:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("strmatch.in", "r", stdin); ^ main.cpp:18:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("strmatch.out", "w", stdout); ^ main.cpp:25:7: warning: array subscript is below array bounds [-Warray-bounds] p = buf - 1; ~~^~~~~~~~~ main.cpp:25:7: warning: array subscript is below array bounds [-Warray-bounds] main.cpp:25:7: warning: array subscript is below array bounds [-Warray-bounds] main.cpp:25:7: warning: array subscript is below array bounds [-Warray-bounds] main.cpp:25:7: warning: array subscript is below array bounds [-Warray-bounds] main.cpp:25:7: warning: array subscript is below array bounds [-Warray-bounds]