Compilare: main.cpp: In function 'int main()': main.cpp:52:23: warning: array subscript has type 'char' [-Wchar-subscripts] valc = f[first].nrcuv + 1; ^ main.cpp:53:28: warning: array subscript has type 'char' [-Wchar-subscripts] v[i].prov = f[first].poz; ^ main.cpp:55:26: warning: array subscript has type 'char' [-Wchar-subscripts] if (valc > f[last].nrcuv) { ^ main.cpp:56:19: warning: array subscript has type 'char' [-Wchar-subscripts] f[last].nrcuv = valc; ^ main.cpp:57:19: warning: array subscript has type 'char' [-Wchar-subscripts] f[last].poz = i; ^ main.cpp:17:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("text3.in", "r", stdin); ^ main.cpp:18:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("text3.out", "w", stdout); ^ main.cpp:23:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%c", &ch); ^ main.cpp:35:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%c", &ch); ^ main.cpp:43:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%c", &ch); ^ main.cpp:39:22: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized] v[k].ult = last; ~~~~~~~~~^~~~~~