Compilare: user.cpp: In function ‘int main()’: user.cpp:31:59: warning: array subscript has type ‘char’ [-Wchar-subscripts] for( i = 0, total = 0; i < L; ++i ) total += litera[ s[i] ]; ^ user.cpp:39:45: warning: array subscript has type ‘char’ [-Wchar-subscripts] for( i = 0, x = 0; x + litera[ s[i] ] <= W-3; ++i ) ^ user.cpp:40:85: warning: array subscript has type ‘char’ [-Wchar-subscripts] { if(!s[i]) printf(" "); else printf("%c",s[i]+'a'-1); x += litera[ s[i] ]; } ^ user.cpp:10:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("texttrim.in","r",stdin); ^ user.cpp:11:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("texttrim.out","w",stdout); ^ user.cpp:18:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^ user.cpp:22:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&pass); ^ user.cpp:23:26: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(s,NMax-1,stdin); ^ user.cpp:25:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&W); ^