View Compilation Error

0_0_5496483_10275.cpp: In function `void copy(char*, char*, int, int)':
0_0_5496483_10275.cpp:31: error: `astr' undeclared (first use this function)
0_0_5496483_10275.cpp:31: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_5496483_10275.cpp: In function `int main()':
0_0_5496483_10275.cpp:44: error: expected primary-expression at end of input
0_0_5496483_10275.cpp:44: error: expected `;' at end of input
0_0_5496483_10275.cpp:44: error: expected `}' at end of input
0_0_5496483_10275.cpp:44: error: expected `}' at end of input