View Compilation Error

0_0_34690628_11928.cpp: In function 'int main()':
0_0_34690628_11928.cpp:11:3: error: expected initializer before 'gets'
   gets(a);
   ^
0_0_34690628_11928.cpp:12:3: error: 'n' was not declared in this scope
   n=strlen(a);
   ^
0_0_34690628_11928.cpp:19:1: error: expected '}' at end of input
 }
 ^