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View Compilation Error

0_0_20529524_8150.cpp:9:12: error: 'int exp [110]' redeclared as different kind of symbol
 int exp[110];
            ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/cmath:44:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_20529524_8150.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/math.h:148:18: note: previous declaration 'double exp(double)'
   double __cdecl exp(double _X);
                  ^
0_0_20529524_8150.cpp: In function 'int main()':
0_0_20529524_8150.cpp:19:32: error: ISO C++ forbids applying 'sizeof' to an expression of function type [-fpermissive]
         memset(exp,0,sizeof(exp));
                                ^
0_0_20529524_8150.cpp:19:33: error: cannot resolve overloaded function 'exp' based on conversion to type 'void*'
         memset(exp,0,sizeof(exp));
                                 ^
0_0_20529524_8150.cpp:24:32: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
             scanf("%d%d",&exp[i],&hold[i]);
                                ^
0_0_20529524_8150.cpp:33:67: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
                     dp[j][u]=max(dp[j][u],dp[j-hold[i]][u-1]+exp[i]);
                                                                   ^


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