View Compilation Error

0_0_34264763_17427.cpp: In function 'int main()':
0_0_34264763_17427.cpp:38:6: error: 'chara' was not declared in this scope
      chara[1000] ,b[1000];
      ^
0_0_34264763_17427.cpp:38:19: error: 'b' was not declared in this scope
      chara[1000] ,b[1000];
                   ^
0_0_34264763_17427.cpp:42:17: error: 'a' was not declared in this scope
          memset(a , '0' ,sizeof(a));
                 ^
0_0_34264763_17427.cpp:50:6: error: 'return0' was not declared in this scope
      return0;
      ^