Eroare de compilare: user.cpp:7:45: error: ‘int j1’ redeclared as different kind of symbol int m,n,j,i,a[501][501],f,cmax,c[101],i1,i2,j1,j2,ok,aux,k,o=1; ^ 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/iostream:38, from user.cpp:1: /usr/include/i386-linux-gnu/bits/mathcalls.h:240:1: error: previous declaration of ‘double j1(double)’ __MATHCALL (j1,, (_Mdouble_)); ^ user.cpp: In function ‘int main()’: user.cpp:28:7: error: assignment of function ‘double j1(double)’ j1=1; ^ user.cpp:28:7: error: cannot convert ‘int’ to ‘double(double)throw ()’ in assignment user.cpp:32:10: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] for(j=j1;j<=j2;j++) ^ user.cpp:49:18: error: ISO C++ forbids comparison between pointer and integer [-fpermissive] for(j=j2;j>=j1;j--) ^ user.cpp:58:19: error: invalid types ‘int [501][double(double)throw ()]’ for array subscript if(a[i][j1]==1) ^ user.cpp:61:7: error: ISO C++ forbids incrementing a pointer of type ‘double (*)(double)throw ()’ [-fpermissive] j1++; ^ user.cpp:61:7: error: lvalue required as increment operand