Eroare de compilare: user.cpp:12:5: error: ‘int y1’ redeclared as different kind of symbol int y1,y2; ^~ In file included from /usr/include/features.h:367:0, from /usr/include/x86_64-linux-gnu/c++/6/32/bits/os_defines.h:39, from /usr/include/x86_64-linux-gnu/c++/6/32/bits/c++config.h:507, from /usr/include/c++/6/cassert:43, from /usr/include/x86_64-linux-gnu/c++/6/32/bits/stdc++.h:33, from user.cpp:1: /usr/include/bits/mathcalls.h:251:1: note: previous declaration ‘double y1(double)’ __MATHCALL (y1,, (_Mdouble_)); ^ user.cpp: In function ‘int main()’: user.cpp:28:19: warning: ISO C++ forbids incrementing a pointer of type ‘double (*)(double) throw ()’ [-Wpointer-arith] y1++; ^~ user.cpp:28:19: error: lvalue required as increment operand user.cpp:29:22: error: invalid types ‘info [100005][double(double) throw ()]’ for array subscript v1[y1].st=x/2; ^ user.cpp:30:22: error: invalid types ‘info [100005][double(double) throw ()]’ for array subscript v1[y1].l=l; ^ user.cpp:40:20: error: ISO C++ forbids comparison between pointer and integer [-fpermissive] for(int i=1;i<=y1;i++) ^~ user.cpp:17:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("numar.in","r",stdin); ^ user.cpp:18:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("numar.out","w",stdout); ^ user.cpp:19:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&S); ^