Eroare de compilare: user.cpp:10:14: error: ‘unsigned int y1’ redeclared as different kind of symbol unsigned x1, y1, x2, y2; ^ In file included from /usr/include/features.h:346:0, from /usr/local/include/c++/4.8.0/i686-pc-linux-gnu/bits/os_defines.h:39, from /usr/local/include/c++/4.8.0/i686-pc-linux-gnu/bits/c++config.h:420, from /usr/local/include/c++/4.8.0/cstdio:41, from user.cpp:1: /usr/include/bits/mathcalls.h:242:1: error: previous declaration of ‘double y1(double)’ __MATHCALL (y1,, (_Mdouble_)); ^ user.cpp: In function ‘void read()’: user.cpp:16:10: error: assignment of function ‘double y1(double)’ x1=x2=y1=y2=0; ^ user.cpp:16:10: error: cannot convert ‘unsigned int’ to ‘double(double)throw ()’ in assignment user.cpp:20:35: error: invalid operands of types ‘int’ and ‘double(double)throw ()’ to binary ‘operator*’ for(;*p>='0'&&*p<='9';p++) y1=10*y1+int(*p-'0');p++; ^ user.cpp: In function ‘void init()’: user.cpp:29:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=1;(1<<k)<=m;k++) ^ user.cpp:31:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n;i++) ^ user.cpp:33:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j+(1<<k)-1<=m;j++) ^ user.cpp:40:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=1;(1<<k)<=n;k++) ^ user.cpp:42:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i+(1<<k)-1<=n;i++) ^ user.cpp:44:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j<=m;j++) ^ user.cpp:51:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(p=1;(1<<p)<=n;p++) ^ user.cpp:53:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=1;(1<<k)<=m;k++) ^ user.cpp:55:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i+(1<<p)-1<=n;i++) ^ user.cpp:57:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j+(1<<k)-1<=m;j++) ^