Compilare: user.cpp: In function ‘void normalize(char*)’: user.cpp:23:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(!uz[chr]) ^ user.cpp:25:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] uz[chr]=a++; ^ user.cpp:27:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] c[i]=uz[chr]; ^ user.cpp: In function ‘int main()’: user.cpp:35:13: warning: unused variable ‘j’ [-Wunused-variable] int n,i,j,m; ^ user.cpp:36:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("criptare2.in","r",stdin); ^ user.cpp:37:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("criptare2.out","w",stdout); ^ user.cpp:38:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&n); ^ user.cpp:42:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",e); ^ user.cpp:46:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&m); ^ user.cpp:49:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",e); ^