Compilare: user.cpp: In function ‘int main()’: user.cpp:26:19: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[50005]’ [-Wformat=] scanf("%s",&s1); ^ user.cpp:34:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] nr[i]=f[s1[i]]+1; ^ user.cpp:35:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] f[s1[i]]++; ^ user.cpp:39:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[s2[i]]++; ^ user.cpp:40:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] m[s2[i]][v[s2[i]]]=i; ^ user.cpp:40:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] m[s2[i]][v[s2[i]]]=i; ^ user.cpp:44:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] perm[i]=m[s1[i]][nr[i]]; ^ user.cpp:48:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[s2[i]]!=f[s2[i]]) ^ user.cpp:48:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[s2[i]]!=f[s2[i]]) ^ user.cpp:24:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("swap.in","r",stdin); ^ user.cpp:25:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("swap.out","w",stdout); ^ user.cpp:26:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",&s1); ^ user.cpp:27:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("\n"); ^ user.cpp:29:24: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(s2,1,l,stdin); ^