View Compilation Error

0_0_29852808_29448.cpp:6:1: error: expected ',' or ';' before 'char'
 char str[maxn];
 ^
0_0_29852808_29448.cpp: In function 'int main()':
0_0_29852808_29448.cpp:11:14: error: 'str' was not declared in this scope
   scanf("%s",str);
              ^