View Compilation Error

81857_0_12593.cpp:2: error: expected constructor, destructor, or type conversion before '=' token
81857_0_12593.cpp:2: error: expected `,' or `;' before '=' token
81857_0_12593.cpp: In function `int main()':
81857_0_12593.cpp:31: error: `arr' undeclared (first use this function)
81857_0_12593.cpp:31: error: (Each undeclared identifier is reported only once for each function it appears in.)