Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:15:2: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(a); ^~~~ In file included from /usr/include/c++/6/cstdio:42:0, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^~~~ user.cpp:15:8: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations] gets(a); ^ In file included from /usr/include/c++/6/cstdio:42:0, from user.cpp:1: /usr/include/stdio.h:638:14: note: declared here extern char *gets (char *__s) __wur __attribute_deprecated__; ^~~~ user.cpp:20:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < strlen(a) && sum <= w; sum += l[a[i]], i++ ); ~~^~~~~~~~~~~ user.cpp:20:58: warning: array subscript has type ‘char’ [-Wchar-subscripts] for( int i = 0; i < strlen(a) && sum <= w; sum += l[a[i]], i++ ); ^ user.cpp:23:3: error: ‘g’ was not declared in this scope g << a; ^ user.cpp:26:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int sum = 0, i = 0; i < strlen(a) ; i++ ) ~~^~~~~~~~~~~ user.cpp:28:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( sum + l[a[i]] <= w - 3 ) ^ user.cpp:31:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] sum += l[a[i]]; ^ user.cpp:17:6: warning: unused variable ‘i’ [-Wunused-variable] int i = -1; ^ user.cpp:18:6: warning: unused variable ‘s’ [-Wunused-variable] int s = 0; ^ user.cpp:11:35: 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:12:37: 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:13:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&l[' ']); ^