Eroare de compilare: user.cpp:13:17: error: ‘int yn [26]’ redeclared as different kind of symbol int xn[26],yn[26]; ^ In file included from /usr/include/features.h:357:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/os_defines.h:39, from /usr/include/i386-linux-gnu/c++/4.8/bits/c++config.h:420, from /usr/include/c++/4.8/iosfwd:38, from /usr/include/c++/4.8/ios:38, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/i386-linux-gnu/bits/mathcalls.h:244:1: error: previous declaration of ‘double yn(int, double)’ __MATHCALL (yn,, (int, _Mdouble_)); ^ user.cpp: In function ‘void goleste()’: user.cpp:20:19: warning: pointer to a function used in arithmetic [-Wpointer-arith] xn[i]=yn[i]=0; ^ user.cpp:20:20: error: assignment of read-only location ‘*(yn + ((sizetype)i))’ xn[i]=yn[i]=0; ^ user.cpp:20:20: error: cannot convert ‘int’ to ‘double(int, double)throw ()’ in assignment user.cpp: In function ‘int main()’: user.cpp:41:28: warning: pointer to a function used in arithmetic [-Wpointer-arith] yn[int(y[j])-97]++; ^ user.cpp:41:28: warning: pointer to a function used in arithmetic [-Wpointer-arith] user.cpp:41:29: error: ISO C++ forbids incrementing a pointer of type ‘double (*)(int, double)throw ()’ [-fpermissive] yn[int(y[j])-97]++; ^ user.cpp:41:29: error: lvalue required as increment operand user.cpp:44:42: error: invalid conversion from ‘double (*)(int, double)throw ()’ to ‘void*’ [-fpermissive] qsort(yn,26,sizeof(int),comparare); ^ In file included from /usr/include/c++/4.8/cstdlib:72:0, from /usr/include/c++/4.8/ext/string_conversions.h:41, from /usr/include/c++/4.8/bits/basic_string.h:2815, from /usr/include/c++/4.8/string:52, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/stdlib.h:761:13: error: initializing argument 1 of ‘void qsort(void*, size_t, size_t, __compar_fn_t)’ [-fpermissive] extern void qsort (void *__base, size_t __nmemb, size_t __size, ^ user.cpp:47:27: warning: pointer to a function used in arithmetic [-Wpointer-arith] if(xn[j]!=yn[j]) ^